Ultrasound includes waves with a frequency of over 20 thousand hertz. Physically, a person does not hear them, but the body still perceives these vibrations and can react to them. Despite the range beyond their perception, people have long been using ultrasound in various areas of their lives. It is used in medical and biological research, industry, transport and technical fields. It is used to create cleaning devices for jewelry, medical instruments and household items. The most famous "users" of ultrasound in nature are bats. It is he who helps them to accurately navigate in the pitch darkness of the caves.
Dolphins, cetaceans, some birds, rodents and even mosquitoes communicate with ultrasound. Many animals do not use it for communication, but they are able to hear it. This explains the effectiveness of ultrasonic repellents of household and garden pests. The higher the ability of parasites to perceive sound vibrations of a given range, the more effective such equipment is in combating them.
Such devices include an ultrasonic cockroach repeller, reviews of which are at times very contradictory. Why do some admire his work, while others consider it a waste of money? First of all, it is necessary to understand that ultrasound does not kill, but only scares cockroaches, creates uncomfortable conditions for their life, which is why insects leave the apartment after a while. Unfortunately, some of the claims are received by ultrasonic devices precisely because of a lack of understanding of the principle of their operation. The second problem is that cockroaches do not react at all to the device. Most often this applies to newly hatched young animals.
The reason lies in the physiology of cockroaches. Long-term exposure is required for the expected effect. Just like people, they do not hear these frequencies, but they are able to feel them. In marine terminology, there is such a thing as the "Voice of the Sea". This is infrasound created by waves and wind in the range of 6-10 hertz, which can cause pain in the ears and a strong sense of fear, even panic, in a person. Ultrasound affects cockroaches in much the same way. The third problem that can be encountered when using sound scarers is the impact on households and pets. Fortunately, this influence is selective, but still likely. Decorative rats or guinea pigs will feel it inevitably, cats and dogs - how lucky. In the case of people, exposure to ultrasound radiation can manifest itself as side symptoms that, at first, many do not even associate with scarers: headache, irritability, discomfort in the ears, weakness, and poor sleep. The manifestation of these and other ailments is very individual and depends on the characteristics of the organism. The human body may well not react at all to ultrasound. To avoid direct exposure, turn on the device when there is no one in the room - ultrasound waves do not pass through walls, wooden doors and glass, but only reflect from them. However, for maximum effect, manufacturers advise keeping the devices on at all times.
If you have opted for an ultrasonic repeller, then a reasonable question arises, which one is better to choose?
Varieties of scarers
The main purpose of these devices is not destruction, but the creation of conditions unbearable for the life of pests. Most often, scarers are used in a complex of preventive measures, collectively called "barrier protection".
The devices influence the sensory organs of cockroaches by means of signals of a certain intensity and frequency. By the type of radiation, scarers are classified as ultrasonic and electromagnetic. There are also combined gadgets that combine these technologies and have additional options.
Electrofumigators, effective against small flying insects, meanwhile, have little effect on the behavior of cockroaches. In addition, most of these devices are designed to destroy pests, therefore, these devices can only be classified as scarers.
"Twin brothers"
The Ixus-KY-6182 electromagnetic device is sold in online stores, the manufacturer of which is modestly silent on the sellers' pages.
On the Ixus ultrasonic cockroach repeller, the reviews do not contain even the slightest positive emotions, and the reviews themselves are few. The device is like two drops of water similar to Eco Spier, the description of its operation and characteristics in the instructions are practically the same, only it costs much less. Since it can only be purchased via the Internet, it is not worth dreaming about the effectiveness of its work.
The Zenet XJ-90 and Air Comfort XJ-90 are the same twins. In fact, this is one ultrasonic cockroach repeller, reviews of which are equally negative and harsh. They emphasize that the new name did not in any way affect the efficiency of the previously tested and completely discredited device.
Ultrasonic devices
Ultrasound is considered to be acoustic waves, the frequency of which exceeds 20 kilohertz. Microwave radiation is widely used today in medical technology and in manufacturing. The human ear is not able to perceive very high frequencies, but some animals and insects use ultrasound to transmit any information to each other and react to it.
Ultrasonic devices, according to the assurances of the developers, effectively work against a variety of pests
The described feature made it possible to use ultrasound to repel pests, including cockroaches. However, in this case, more questions arise than answers, because the latter practically do not react to sounds and communicate through direct physical contact and chemical secretions.
The principle of operation of the ultrasonic repeller is quite simple. The electronic filling of the device generates pulses of the required amplitude when power is applied. The sawtooth voltage is applied to a special sensor (piezoelectric element or dynamic head), which forms the final acoustic signal.
Do cockroaches feel fear when using ultrasound?
Manufacturers of ultrasonic devices note that when the repeller is turned on, cockroaches experience a feeling of fear and panic, trying to leave the dangerous territory as soon as possible. In light of the fact that pests do not have organs for the perception of such signals, this statement can be very dubious.
An effective cockroach repeller must have sufficient power.
On the other hand, some of the users still note a certain effect from the use of high-power ultrasonic scarers, but the operation of such devices is permissible only in the absence of people. Thus, we can conclude that the effectiveness of household ultrasonic repellents in the fight against cockroaches is most likely not high, but this method is applicable in conjunction with other measures to combat and prevent the emergence of pests.
Advantages and Disadvantages of Ultrasonic Devices
Among the positive aspects of the use of ultrasonic cockroach repellents are:
- ease of use - the devices do not require any specific maintenance and care;
- safety in relation to people (there is a conflicting opinion of experts);
- environmental friendliness - the devices do not emit harmful and toxic substances.
The disadvantages of ultrasonic cockroach repellents are:
- their insecurity in relation to pets - especially small rodents (hamsters, decorative mice and rats) and birds;
- most often low efficiency;
- quite high price - especially for the so-called professional models.
Rules for the operation of the cockroach repeller
You can achieve a certain effectiveness of the repeller by adhering to the recommended rules for its use.
Ultrasonic cockroach repeller is placed at a height of 1-1.5 meters from the floor
User's manual:
- use not one but several devices at the same time. This approach will help get rid of insect colonies. Ideally, an appliance should be placed in each room;
- the repeller should not be installed flush with the floor. By raising the device to a height of one meter, you will significantly increase the area of its impact;
- in a room cluttered with furniture and other interior items, the effectiveness of the ultrasonic repeller decreases. The way out is to install two or more devices in the room;
- during the operation of the gadget, you need to monitor your condition, the condition of other people, especially children, as well as the behavior of pets. If you feel unwell on the part of someone, you should stop using the repeller;
- if damage or malfunction is found, the device should be repaired or replaced. The use of a faulty device is unacceptable;
- use the repeller in combination with other methods of control and prevention. The main remedy, for example, can be a special insecticide;
- According to the manufacturers of ultrasonic scarers, the effect of the latter is not instantaneous. You should wait one to three weeks;
- the device must work continuously and must not be disconnected from the mains. Otherwise, the cockroaches are more likely to return.
How effective is ultrasound from cockroaches that have settled in the house?
Even 15-20 years ago, mechanical traps and poisonous insecticides were used to control insects in the house. Working with them is troublesome and unsafe. Therefore, the electric cockroach repeller has become such a popular means of dealing with uninvited guests. The devices are capable of generating a sound wave with a frequency of 18 kHz and higher. The sound of such a frequency is indistinguishable to the human ear (it perceives sound waves up to 16-17 kHz) and does not interfere with domestic animals (except for rodents, small birds). But insects - Prussians, ants, fleas, bugs and mosquitoes - hear him perfectly.
But a modern device for fighting cockroaches does not kill ginger neighbors, but creates unacceptable living conditions for them. The principle of action is extremely simple:
- when turned on, the device emits a high frequency sound wave from cockroaches and bedbugs;
- it is perceived by the organs of touch and hearing of insects, causing unpleasant sensations;
- a plug-in device from cockroaches plunges insects into a panic state, forcing them to signal their relatives about the danger;
- populations of Prusaks begin to look for shelter in a chaotic manner;
- not finding him, they run away.
The best cockroach fumigator is ultrasound delivered with a flickering frequency. The supply of sound waves of various frequencies prevents pests from becoming accustomed to an unfavorable environment. The processes of nervous regulation reach their apogee.
Popular ultrasound models
Ultrasonic scarers can be used both at home and at work.Often these devices are universal, that is, they work against a wide variety of pests.
Typhoon LS-500
Ultrasonic repeller Typhoon LS-500 allows you to fight against insect pests of different types, these are:
- fleas,
- ants,
- cockroaches,
- bugs.
Typhoon LS-500 device causes discomfort and panic in insects
According to the manufacturer, the device causes discomfort and panic in insects. Pests try to leave the dangerous territory as soon as possible. Additionally, the device acts on cockroaches with light radiation and a sound frequency signal in the audible range (makes clicks). The complete disappearance of insects occurs in the second or third week of continuous operation of the LS-500.
The repeller can be used on objects such as:
- utility rooms - living rooms, kitchens, bathrooms;
- utility rooms of various kinds - warehouses, change houses, catering establishments and the like.
The device operates from an electrical network with a voltage of 220 volts. The built-in microcontroller automatically changes the sound frequency and duration of ultrasound radiation, so cockroaches cannot adapt to unfavorable conditions for them.
Video: scarer review
Reviews Typhoon LS-500
I got one too. I watched TV and in the advertisement they started to advertise the Typhoon LS-500 ultrasonic cockroach repeller. And of course it became interesting what it is, since we live in an apartment and sometimes suffer from these cockroaches. What can I say, an advertised device that does not fulfill its function. My cockroaches both lived in the kitchen and remained to live there, they did not run away anywhere. Wasted money.
kurovskaya1
The device worked for me for about a year and during this time I have never seen cockroaches. However, beetles and spiders periodically delighted me with their presence. Therefore, we can say that the device does not act on insects as a whole. After I turned off the Typhoon ultrasonic repeller, 4 years have passed. During this time, I met cockroaches in the kitchen 1 or 2 times.
lano4ka
Weitech WK-0600
The manufacturer positions the Weitech WK-0600 ultrasonic device as a powerful professional pest and rodent control agent. First of all, the device is recommended for use in non-residential premises of industrial and trade enterprises, in warehouses, bases, in the holds of ships. WK-0600 can be used at home, but in the absence of people and their pets. Due to the increased power, dual emitter and protection from adverse environmental conditions, the gadget is permissible for use in open areas.
The technology used in the Weitech WK-0600 has been proven by independent laboratory tests
Weitech WK-0600 has several modes of operation. The adjustment is carried out both in the range and in the level of the emitted signal. In the presence of people, the device is recommended to be switched on only in the so-called "quiet mode" with reduced power.
According to the manufacturer, the repeller affects the nervous system of the pests, forcing them to leave the protected area.
User reviews
Weitech WK-0600 ultrasonic rodent and insect repeller is a complete deception of honest people. For the money I earned, I bought Weitech WK-0600 ultrasonic rodent and insect repeller last year. I very much hoped for an advertisement for this miracle device. I turned it on several times a day, kept it longer than advised in the instructions, and the effect was zero. I don’t know about the rodents (I hunt them in the usual traditional way), but there are no fewer insects in the house.
FLORENZIA
No comments. The score is probably five. Everything suits the device.
Denis
Zenet XJ-90
The versatile ZENET XJ-90 repeller helps fight mosquitoes, cockroaches and other insects without negatively affecting people and pets. The principle of operation of the device is based on the effect on pests of an ultra-high frequency sound signal. The device operates from a standard power supply.
Zenet XJ-90 does not emit any harmful or toxic substances
Among the features of the ZENET XJ-90 scarer are:
- covered area up to 25 square meters,
- profitability,
- the presence of night illumination.
The device can be used with equal success both in residential premises and in industrial facilities for various purposes.
Opinions about Zenet XJ-90
We bought such a cockroach repeller. They are not that they have not disappeared, they lived on it. Therefore, I can say that this is complete nonsense, or our cockroaches are not afraid of anything.
Katushka30
Today I once again received an ultrasonic rodent and insect repeller Zenet XJ-90 at the request of my daughter. She studies at the university and lives in a hostel. And imagine that there is the most expanse for cockroaches. This device was used by me and all my neighbors, acquaintances who faced a similar problem. Now I decided to help my daughter and her dorm friends get rid of this scourge. We also had a time when at night you cannot fall asleep for fear that a cockroach will fall on you from the ceiling or crawl up your hand. And the constant washing of tables, cabinets and refrigerator from the traces of these abominable cockroaches. What methods we just didn’t try: the whole apartment was outlined with "Chinese pencils", they barely saved the cat, because he ate a few potato balls with boric acid, and what effort did it take to constantly wash the whole house from poison and pencil ... Looking at all this is simple it is impossible to maintain peace of mind. But now we are all right. We got rid of the cockroaches.
AlisaLAV
EcoSniper LS-927
The main distinguishing feature of the EcoSniper LS-927 insect and rodent repeller is the presence of a powerful dual ultrasonic generator. According to the developers of the device, this at least doubles the efficiency of the device.
The EcoSniper LS-927 scarer features ease of use and the ability to work from a network through an adapter
The universal ultrasonic repeller EcoSniper LS-927 works against such pests as:
- cockroaches,
- ants,
- spiders,
- rats,
- mouse.
In the passport of the device, an amazing exposure area is declared - up to 500 square meters. At the same time, the repeller does not consume a large amount of electricity and has small dimensions and weight.
Customer Reviews
The device is Chinese. Works the same as the cheaper models. Mass propaganda has been noticed for this manufacturer.
Galyr
The device has two modes of using sound, one of them is hardly applicable at all in living quarters, it is a very harsh sound. Some people are annoyed by the blinking of the light bulb, so not everyone can stand the silent mode.
Margosha
Advantages: 1. Almost silent device, weak clicks are heard, absolutely not straining the ear; 2. Taiwan manufacturer; 3. Two speakers for better range. They work in various frequency ranges; 4. Plastic does not smell. Disadvantages: None.
Alexei
Tornado OT-01
Tornado OT-01 is a Russian product made from Chinese components. Whether it is good or bad, it is ultimately up to the users of the device to decide, and in the opinion of the majority, the device does not cope very well with cockroaches.
Ultrasonic scarer Tornado OT-01 - one of the developments of the domestic enterprise LLC MNPF "Center New Technologies"
Despite not very positive reviews, OT-01 can be used to prevent the appearance of pests and to combat them together with chemicals. The device has a fairly compact size and is not very heavy. The body is made of black plastic. There is an indicator of the operation of the repeller. The device operates from a network with a voltage of 220 volts.
Reviews about Tornado OT-01
Works! I bought it for trial, as the chemistry did not help much. A strange action at the device: in the first three days, cockroaches climbed out from wherever they could, it even seemed that there were more of them. I called the store to find out what it was. I was told that it should be so, and soon the cockroaches will leave.Indeed, 8 days have passed and the number of cockroaches has become much less!
Svetlana Viktorovna
EMR-25
The EMR-25 device is a multifunctional insect and rodent repeller and combines the principles of ultrasonic and electromagnetic radiation. The device can be used against:
- cockroaches,
- ants,
- spiders,
- crickets,
- silverfish,
- earwig,
- fleas,
- ticks
- scorpions,
- bats,
- house and garden mice,
- rats.
EMR-25 also works as an air purifier
The device can operate in one of the four modes listed below:
- electromagnetic radiation,
- ultrasound,
- air purifier,
- ultrasonic radiation and cleaner.
It is interesting that an impressive set of modes, high quality workmanship and a sufficiently high power of the device do not greatly affect its cost. We can say that this repeller has a balanced price-quality ratio.
User reviews
We bought a universal ultrasonic and electromagnetic scarer of rats, mice, ants, cockroaches, ticks, fleas, spiders and crickets EMR-25. My impressions: The cat, if she heard, did not react. The device buzzes only if you bring your ear closer to it. The night light is nasty, blue in color, but the room is slightly illuminated. In general, his presence is not particularly felt. Used for two months. The result is promised in 2-3 weeks, on some resources - in four. And so: The mice, as promised, were activated: they began to be thrown out of the cracks and were finished off by the cat, they began to shit more, some stupefied individuals came out a couple of times and stood, thinking about life (the cat was ready) And then nothing. As they galloped, they are galloping to this day. Insects: Cockroaches and mosquitoes are on a roll. Spiders also go wherever they want around the house.
Julia as Julia
Table: characteristics of ultrasonic repellents
| Model | Power | Working frequency range | Food | Impact area | price |
| Typhoon LS-500 | 1 watt | 20-40 kHz | 220 V | up to 80 sq. m. | 1100 p. |
| Weitech WK-0600 | 0.4 watts | 2-50 kHz | 220 V | up to 325 sq. m. | 6990 p. |
| Zenet XJ-90 | 1 watt | 20-27 kHz | 220 V | 20-25 sq. m. | 1000 p. |
| EcoSniper LS-927 | 1.5 watts | 20-40 kHz | 220 V | up to 460 sq. m. | 2000 p. |
| Tornado OT-01 | 1 watt | 13-27 kHz | 220 V | up to 50 sq. m. | 900 p. |
| EMR 25 | 1.5 watts | 20-40 kHz | 220 V | up to 560 sq. m. | 1800 p. |
Effects of ultrasound on cockroaches
It cannot be said that ultrasound does not affect them at all. Works only with high power. But a person also feels such frequencies, and his four-legged favorites too.
Experiments show that high-frequency signals of a certain power affect the general condition of the cockroach, disrupt its nervous system, but in a completely unpredictable way. It would be fine to stop multiplying, and that is the result. But no, the number of insects is decreasing very slightly.
Therefore, reviews of ultrasonic cockroach repellents are often replete with complaints that pets stop eating, and their owners stop sleeping. Most people have headaches all the time.
The sellers of the devices recommend staying as far as possible from the activated repeller, however, they talk about this even when the outraged buyers are trying to return the harmful product. And then they continue to sell the most ineffective and harmless means of getting rid of cockroaches.
Tips for choosing the right model
When choosing an ultrasonic repeller, experts advise you to pay attention to the following points:
- in the case of a residential apartment or house, purchasing a heavy duty appliance is not a good idea. Or the tenants will have to leave the premises during the operation of the device (which is 3-4 weeks). On the other hand, a device with low power is less efficient;
- there are scarers with an impact area of up to one square kilometer, but such devices are recommended, again, only in non-residential premises and in open spaces.An alternative option is several scarers with an impact area of 25-50 square meters, one per room;
- in order not to run into a fake, gadgets are recommended to be purchased in specialized stores or from official dealers of the manufacturer.
Universal rodent and insect repeller
An innovative professional device manufactured by the Russian LLC Aifo-Technology "GRAD A-1000 PRO" can operate in four different modes, in two of which it scares away rodents, in one more - mosquitoes, and one more is intended for other insects. "Grad" serves an area of up to 1000 sq. m and removes any pests in two weeks of constant work. But its main purpose is to fight rodents. And he copes with this task perfectly. Also good reviews for repelling mosquitoes. But specifically, we are not talking about scaring off cockroaches in the reviews. Maybe because the weapon is too serious against them.
The Belgian ultrasonic repeller "Weitech WK600" operates in nine modes and serves an area of more than 300 square meters. meters and in a wide range of radiation 2-50 kHz. Nobody buys it for fighting cockroaches separately. And the reviews contain little specifics, but users are happy with them. I would like to believe that, in addition to mice, mosquitoes and moths, cockroaches also go to blue distances.
How to make an ultrasonic repeller with your own hands
You can assemble an ultrasonic repeller with your own hands, having at least basic knowledge of electronics. The schematic diagram of such a device is shown below.
The specified parts can be replaced by any domestic or imported counterparts.
As you can see, the device includes thirteen elements, namely:
- fixed resistors R1, R2, R3, R4, R5;
- trimmer resistor R6;
- piezoceramic sound transducer BQ1;
- transistors VT1, VT2;
- non-polar capacitors C1, C2;
- diode VD1;
- switch S1.
Parts can be purchased at a radio store or, if possible, obtained from an old radio or TV. You will also need foil-clad textolite for the printed circuit board. The latter is made by chemical etching.
You can do without the manufacture of a printed circuit board by performing the installation by the hinged method
The key elements of the device are transistors VT1, VT2, which generate an electrical signal of the required frequency and power, and a piezoceramic speaker BQ1, which directly emits ultrasound. The trimmer R6 adjusts the frequency of the ultrasonic signal. Toggle switch S1 turns the device on and off. The power source is a battery (accumulator) or a power supply unit. The circuit works stably at a voltage of 4.5-12 V.
According to the reviews of users who collected this homemade ultrasonic repeller, the desired effect was observed both in relation to insects and rodents. That is, the device is universal. In this case, it is important to select the required ultrasound frequency as accurately as possible by connecting an oscilloscope to the output of the device.
The finished board can be mounted in any suitable enclosure
Views
Devices that scare off cockroaches differ in their versatility, parameters, properties, principle of operation and range.
Ultrasonic
The device does not kill with the help of ultrasound, but scares off cockroaches. The waves travel far enough. Only at a high frequency do cockroaches leave their habitat. Such devices do not have a negative effect on the human body and pets.
Magnetic resonance
The devices emit low frequency electromagnetic waves. This forces the insects to change their place of residence.The safety of the repeller directly depends on its power. Devices emitting small frequencies are unproductive: devices only scare away pests without killing them, but they do not harm people and animals. Industrial magnetic resonance scarers are considered more effective, but they are bad for the human body.
Electrofumigators and aquafumigators
Cockroach Fumigators look the same as their mosquito repellents. For the operation of the device, special tablets are used, which, when heated, emit a specific smell. The scent spreads throughout the room and repels pests.
Aquafumigators are considered to be quite powerful and versatile. The device is connected to an outlet, together with the water, a substance is released that scares and poisons cockroaches. Compared to other devices, the devices have a low cost, are convenient to use, and are quite effective. Cons: the substance can have an unpleasant odor and harm your health.
Electromagnetic devices
Electromagnetic repellents use a different principle of influencing pests. The work of this class of gadgets is based on the generation of low frequency electromagnetic waves. Radiation spreads through the mains wiring, thus covering all rooms in the house where electricity is supplied.
Just like ultrasonic devices, electromagnetic repellents affect cockroaches only while they are turned on.
Household appliances that emit low frequency electromagnetic waves are often not powerful enough to seriously harm insects. In particular, this is due to the rigid framework of safety requirements. An increase in output power for the better affects the effectiveness of scarers, but at the same time, the risk of human exposure to radiation increases.
Powerful electromagnetic scarers can be used indoors only in the absence of people, so their use has become more widespread in industrial enterprises, warehouses and bases. However, even rather expensive professional devices do not give a 100% guarantee of complete elimination of pests.
Inexpensive and ineffective household repellents can be used as part of an integrated control and prevention of cockroaches in conjunction with insecticides.
EcoSniper AR-120
Model AR-120 is a device using magnetic resonance radiation principle. The device is stationary.
According to the manufacturer, the studies have shown that EcoSniper AR-120 does not have a harmful effect on humans and pets, being at the same time a powerful irritant to the nervous system in relation to such pests as:
- ants,
- cockroaches,
- fleas,
- spiders.
The EcoSniper AR-120 device may be useful where it is not possible to get rid of cockroaches using traditional methods
The device does not emit any harmful chemicals. Can be used simultaneously with insecticides. Other features include:
- no influence on the operation of electrical wiring and other devices,
- the device does not generate radio interference,
- there are built-in indicators to track the operation of the gadget.
EcoSniper AR-120 can be used on such objects as:
- Living spaces,
- places of public catering (including catering units),
- kitchens,
- clinics,
- warehouses and bases,
- farms and livestock farms.
Reviews about EcoSniper AR-120
I liked the fact that the repeller acts not only with ultrasound, but that it spreads more waves along the electric wires, that is, exactly where these parasites crawl. What should I say, in the first 2 weeks the result was very dubious, of course we were warned that it takes 2-4 weeks to wait for the effect, but as a real Russian person I want everything at once! In general, after 2 weeks of waiting, we began to receive the first results,cockroaches became fewer and fewer, but after a month they completely disappeared. So far, we have been living for 2 months without problems, we do not remove the repeller from the outlet, it does not interfere, let it be for prevention.
sabinaole
We moved to a new rented apartment, like a good repair, an entrance. But then the neighbor let us down, he got a drunkard who has no living creatures in his apartment. People came to him to poison his insects, and they rushed to us! My wife and I grabbed our heads, were already going to move out - who likes such a neighborhood? We decided to try the cockroach repeller, of course we expected the effect from the very first day (you need to read the instructions normally), we were even upset that nothing happened in the first 3 days. But the fourth of these reptiles has decreased! And after 2 weeks they disappeared altogether!
Ivan
Riddex Pest Repeller 1468
This is perhaps the most advertised device for repelling insects and rodents that works using electromagnetic radiation. The manufacturer promises a stunning result in two weeks, however, according to user reviews, the device actually does not function very efficiently.
Electromagnetic device Riddex Pest Repeller 1468 repels pests without killing them
Riddex Pest Repeller can be used:
- in any living space,
- at catering points,
- in any non-residential premises.
The device can be used against:
- rats and mice,
- cockroaches, bed bugs, fleas and spiders.
The device remains operational at temperatures from -30 to + 40 ° C.
User reviews
We bought this repeller from cockroaches, and it turned out to be a repeller, there were even more cockroaches, namely they gathered in a crowd on this repeller. Don't trust advertisements and sellers.
lisi4ka- lis
We were advised by Riddex friends, whom we visited and drew attention to this device. They said that the cockroaches completely disappeared. We ordered from the online store and waited. I dreamed that as soon as I plug it in, I would see cockroaches dying in convulsions and their complete destruction. But that was not the case. We connected it, worked for 2 months. It was promised that in 2 months the cockroaches should disappear, but they both ran and ran. I turned it off and put it in a drawer. They began to poison in other ways, with dichlorvos, poison from the Colorado potato beetle, they already planned to call the sanitary and epidemiological station, so another 3 months passed. And then I remembered about Riddex, I remembered that when it was connected, there were still fewer cockroaches. They plugged it back in, and then I noticed that it still works, I constantly find dead cockroaches on the floor, they began to crawl less than before. But they are not completely destroyed, during the day they are not at all visible, and at night a couple of pieces run in the kitchen, which I kill whenever possible.
@@
EMR-21
The EMR-21 electromagnetic repeller is a universal device and will help to cope with such annoying neighbors as rodents and harmful insects.
According to the manufacturer's assurances, EMR-21 is characterized by maximum efficiency and safety.
The operation of the repeller is indicated by two LEDs of different colors. Green lights up when the device is turned on, red signals the beginning and end of the working cycle. The instructions for use for the device emphasize that it is undesirable to use the gadget in a room where decorative rodents are located. No negative impact on a person during the operation of the device has been identified.
EMR-21 reviews
It helped me, all the cockroaches went to the neighbors. I also offered them, but they have no money yet. We live in a hostel.
Aliev A.A.
We live in a private house in a village, where of course there are a lot of insects and whatever you want, these are ants, and flies, and mosquitoes, cockroaches, and various insects. Since the appearance of the baby, we immediately bought an ultrasonic repeller, we have been using it for more than a year, it works effectively and we have forgotten what insects are in the house, the baby and we sleep peacefully at night, forgetting that a mosquito or a fly can fly in, nothing interferes with our sleep. It is also very convenient, the scarer glows like a flashlight at night, everything is visible, the baby has already grown up and we do not have to turn on the light at night.
Inga
Table: characteristics of electromagnetic devices
| Model | Food | Impact area | Price |
| EcoSniper AR-120 | 220 V | up to 80 sq. m. | 1900 p. |
| Riddex Pest Repeller 1468 | 220 V | up to 200 sq. m. | 700 p. |
| EMR 21 | 220 V | up to 230 sq. m. | 1200 p. |
The reasons for the ineffectiveness of the device against cockroaches
The opinions of those who used a modern device for cockroaches were significantly divided. Some argue that insects leave the territory of a person within 6-8 days after the installation of the unit, other users insist that the device scares away "red neighbors" if it constantly works. And still others talk about the uselessness of the devices. There are several reasons why opinions are divided:
- Incorrect choice. When choosing an electric cockroach repeller for an apartment and a house, you need to take into account the range of the device, the area of the protected area, the frequency of the influencing wave and other physical and technical characteristics.
- Incorrect installation of the device. Ultrasound does not penetrate walls (material is not important). Therefore, the cockroach repeller must be correctly placed in the room. After all, ultrasound is also absorbed by upholstered furniture and reflected from solid furnishings. The diagram below shows how the generated ultrasonic waves propagate from cockroach devices in an apartment.
- Buying a low-quality device. It is wiser to purchase units of proven brands - Typhoon, Zenet, Ixus, Banzai, Pest Reject, EcoSniper, Clean House and some others. Modern ultrasonic cockroach traps are innovative devices that have already won trust. The demand for equipment generates a lot of unscrupulous manufacturers. Consumer reviews will help you buy a quality product.
- Wrong choice of device type. There are placed devices for cockroaches in the socket, and there are stand-alone devices with batteries. When purchasing the second option, it is important to monitor the capacity of the power source. If it has dried up, then there is no generation of ultrasound, which means that the unit is not working.
If the instructions and recommendations of the equipment manufacturer are followed, then the devices give a high result at minimal cost. Therefore, choosing an electronic remedy for cockroaches in an apartment, which can be bought in Moscow at a price of 970 rubles. up to 6 800 rubles, carefully compare the characteristics of the object protected from insects with the capabilities of the device. If it is difficult to make an independent choice, consult a specialist in the store.
Fumigators - cockroach repellents
The principle of operation of electric fumigators is based on the heating of special chemicals and their subsequent evaporation into the air. Vapors negatively affect the sense of smell of insects. There are a lot of options for carriers of irritating chemicals, when the operation of devices is based on a single principle.
There is a ceramic element with a spiral inside the device. During operation, the latter heats up to a temperature sufficient to slowly evaporate the contents of the media.
Fumigators that work well against mosquitoes do not work well against cockroaches
The manufacturers of such devices claim that their devices are safe for humans, but the odors emitted when a poisonous plate is heated or a liquid evaporates is quite caustic. Vapors can provoke a deterioration in well-being in people, therefore, it is highly undesirable to be in the same room with a working electrofumigator. After turning off the device and ventilating the room, the impact on pests ceases.
Despite all the drawbacks, electric fumigators are not without a steady demand in the market. This is due to their relative efficiency and reasonable price.
By the way, much more effective aquafumigators for the most part are not deterrent agents, but work to exterminate pests.
Testimonials
Naturally, the reviews about these devices are both positive and negative. Most likely, it depends on how effective the device was purchased. Many point to the effectiveness of the American manufacturer Pest Reject ultrasonic repeller.Many who had to deal with the problem of insects were satisfied with his work. Some users note the effective operation of the "GRR09" repeller, while it is worth noting that the principle of propagation of ultrasonic waves is such that they cannot bypass obstacles and, moreover, penetrate through walls. Installing the appliance in one room is unlikely to achieve the same effect in other rooms. The same positive reviews are found about the work of the "Ultrasonic Duet" model. But regarding the AR-120 model, many owners respond negatively, claiming that this device only repels mosquitoes.
Typhoon LS 500-700
A domestic remedy that can repel insects, even mice. The radius of action varies from 80 to 200 m, depending on the model purchased. This device shows the best results in comparison with all other repellents on the sales market. The power of the Typhoon scarer is 4 watts.
The cost of the repeller varies depending on the region, the price varies from 920 rubles to 1500 rubles.
How does it all work?
Cockroaches leave because of the ultrasound volume. For example, the popular Tornado OT.02 cockroach repeller generates signals at a sound pressure level of at least 90 decibels. Most telephones ringing or a working lathe is noisy like this. This noise seems low, but it takes its toll. The constantly buzzing ultrasonic siren disturbs the psyche of insects for many weeks. Usually, after 15-20 days, insects leave your territory. They literally get tired of the stress caused by the unfavorable ultrasonic atmosphere.
People cannot hear ultrasound. We will not be uncomfortable with the repeller. Our ears cannot perceive sounds with a frequency higher than 20 kilohertz, and all devices from the store's catalog generate higher frequency signals. In this regard, the age of the person is important. The upper limit of 20 kilohertz is characteristic only for children - by the age of 60 it decreases to a level of 15-17 kilohertz. Therefore, there is no reason for you to hear a working device. Except that in some products, when connected to the mains, an audible squeak is emitted, but this is only necessary to signal the proper operation of the repeller.
Safety confirmed. Strange as it may seem, but ultrasonic products are produced not only in China or Taiwan, but also in our country. In any case, they are certified by the regulatory authorities, since our supply of products is always legal. This ensures that the devices are harmless to your health. They also do not affect radio waves, do not slow down data transmission in wireless networks, and do not impair the growth of indoor plants.
