Ultrasonic cockroach repellers: reviews and descriptions

Cockroaches are probably eternal, indestructible and multiply at an incredible rate. Most of all, they annoy residents of old apartment buildings, which can accommodate the most diverse people. There have long been many folk and chemical means of combating these ubiquitous insects, but almost all of them are dangerous for people and pets.

They need to be constantly updated, and cockroaches get used to them. That is why ultrasonic cockroach repellers are in demand today among gullible buyers, reviews of which, however, are very mixed. This is to say the least.

The operating principle of ultrasonic repellers

Ultrasound can repel insects, science has proven this, but... The fact of the matter is that there is a big “but”. Only those midges and other mosquitoes that communicate with each other using ultrasonic signals can be repelled with ultrasound of a certain frequency. The frequency of the danger warning signal is simulated, and the operation of the device is based on it. When plugged into the network, it begins to create ultrasonic waves, which cause insects to scatter or scatter. Who is given what?

As for cockroaches, firstly, they need to be destroyed, but this cannot be done with ultrasound. Secondly, these insects do not communicate using high frequencies; they do not have such organs. Therefore, reviews of ultrasonic cockroach repellers are mostly negative. Well, the mustachioed ones don’t hear signals of danger, what can you do?

The effect of ultrasound on cockroaches

It is impossible to say that ultrasound has no effect on them at all. Works only at high power. But humans also feel such frequencies, and so do our four-legged pets.

Experiments show that high-frequency signals of a certain power affect the general condition of the cockroach and disrupt its nervous system, but in a completely unpredictable way. It would be nice if they stopped reproducing, and that would be the result. But no, the number of insects is declining very slightly.

Therefore, reviews of ultrasonic cockroach repellers are often replete with complaints that pets stop eating and their owners stop sleeping. Most people have headaches all the time.

Sellers of devices recommend staying as far away from the turned on repeller as possible, however, they talk about this even when indignant buyers try to return harmful goods. And then they continue to sell the most ineffective and harmless means of getting rid of cockroaches for people.

Types of cockroach traps

The rapid development of all spheres of life could not ignore the issue directly related to a very frequent and annoying problem of housewives - cockroaches. Thus, in the process of evolution, a large number of different traps for these “mustachioed” creatures were invented, developed and tested, the best of which will be discussed further in the material.

Adhesive

These types of traps are not only available on the market at a very reasonable price, but are also very simple and easy to use.

The name “glue” speaks for itself, because pests are caught with the help of glue (the sticky bottom of a cardboard box), to which the “mustachioed” neighbors come to feast on the bait.

In order not to confuse the reader in the end, it is worth telling in more detail about the principles of operation of such a trap:

This mechanism is an ordinary cardboard box with many holes on the sides;
Having placed this “house” near the sink, gas stove or behind the refrigerator, in it, at the bottom, you should put a glue bait with a specific smell, which will attract insects;
When “guests” come into the box, their movement will stop almost immediately, because as soon as they touch the bottom, their limbs will stick to it and immobilize them;
It is recommended to throw out cockroaches (change the “bottom”) no more than once a week, although this depends on their number;

Good to know! Finally, it is worth noting that this kind of “trap” is not designed for a huge number of cockroaches in the house, moreover, its functions include only luring and capturing insects, but not their eggs laid in a secluded place.

Ultrasonic

First of all, it is worth noting that, by and large, it is very difficult to call “ultrasonic traps” traps; rather, they are very effective insect repellers

So, to better understand what this type of device is, it would be reasonable to point out several of its inherent features:

Such devices operate from the network, that is, to turn them on you only need to connect the wire to the outlet;
The principle of their effect on insects is that they emit ultrasonic waves, which not only disturb cockroaches, but also have a detrimental effect on their nervous system, which forces them to leave the “danger zone”;
This mechanism spreads its frequencies over a distance of 200 meters, so if you use it in an apartment, you can rid not only your home of “mustachioed” neighbors, but also help your neighbors in this;

Electrical

This kind of traps are considered very popular for a reason, because their principle of operation is very clear, and most importantly, effective.

Externally, this kind of “trap” is an iron box with small holes for pests. Inside it is placed a bait with a very specific smell, which attracts the “mustachioed” inhabitants of the kitchen. Having run into this “house”, the cockroach is subjected to a strong electrical discharge, which as a result kills it.

In addition to what has already been mentioned, it is worth noting the range of additional features inherent in such a mechanism:

Manufacturers do not recommend installing this “device” in places of high humidity and under sinks, because the slightest ingress of water can lead to unforeseen and unfavorable consequences;
This device does not contain any toxic chemicals and does not emit any radiation that could harm the owners of the apartment, their children or pets;
The device can work around the clock, it does not have the property of “overheating”;

Poisonous

Traps that do not require constant attention and control from the owners, since they do not operate from the mains. Moreover, unlike ultrasonic and electric ones, they can be placed in places of high humidity, which increases the chances of destroying more pests, for example, in places where they often accumulate - near the sink or ventilation holes.

The principle of action of poison traps is concentrated in a small box with holes, in which poison is placed with a very pleasant smell that attracts insects. Upon contact with this chemical, the cockroach dies.

Among the features of such traps are the following:

The poisons are in a box that can be attached to any element of furniture and equipment, which is very convenient if there are children in the house;
This bait does not consume electricity, which will save a little money for the home owners;
The poison tends to stick to the body of the insect, which, after consuming the poison on its own, transfers it to its “shelter”, giving the rest of its kind the opportunity to taste the dangerous “delicacy”;

Manufacturers of ultrasonic repellers

It is clear that the market is filled with similar Chinese-made devices, and the attitude towards them is negative, most likely not from a lack of effect, but from the traditional rejection of the quality of goods from the Middle Kingdom.

But ultrasonic cockroach repellers, reviews of which do not radiate friendliness, are produced in Taiwan, the USA and Russia, and enterprises whose products are quite effective in the fight against rodents, bats and mosquitoes.

Powerful, expensive devices, as a rule, are universal and designed to repel both insects and rodents from large areas and receive positive reviews. But there is simply no reason to buy a device of this class. It is cheaper to use gel to kill cockroaches.

Review of popular ultrasonic repellers

Pest Reject

An American-made device with a range of up to 200 meters. This is a modern and quite effective repeller with a wide spectrum of action.

Therefore, using this device you can get rid of not only cockroaches, but also other insects and rodents. This drug is best used in combination with insecticides, as well as with various traps.

Typhoon LS 500

This is a domestically produced device and is designed to repel mice and cockroaches with ultrasound. Ultrasound operates within a radius of about 80 meters, so the device is enough to protect the entire apartment. The device is powered from a 220 V network, and the long cord allows you to connect the device at a considerable distance. This repeller can be purchased both on the Internet and in any hardware store for about 1000 rubles.

WK-600

This is a fairly powerful ultrasonic repeller, which is more suitable for use in large food production plants, since the device is capable of protecting large areas. The cost of the device is within 5 thousand rubles.

Ultrasound duo

This device can easily be considered one of the modern, most advanced ultrasonic repellers. The device is capable of generating a wide band of ultrasonic frequencies that affect the nervous system and hearing organs of various insects, including cockroaches and rodents. The negative effect of ultrasound creates uncomfortable conditions for their life activities so that they are forced to look for more comfortable conditions.

Ultrasonic repellers are safe (at least that’s what the manufacturers claim) for humans, as well as some pets. In addition, the operation of the device does not negatively affect the operation of other electrical appliances and telecommunications.

This device is distinguished by the presence of 3 operating modes, which allows you to change the frequency of ultrasound generation in a wide range (from 25 to 65 kHz). The device is capable of protecting a room of up to 550 square meters from cockroaches. In a few days there will be no trace left of the “uninvited guests”.

Unfortunately, the repeller only affects adults and does not have a negative effect on egg laying. The greatest effect can be obtained in combination with chemical control agents.

hail

This device from a domestic manufacturer is designed to combat cockroaches, rodents and other insects. The principle of operation is the same as that of other models. However, the device differs in some features. For example:

The device is reliable.
And effective.
Has a long service life.
Easy to use.

The Grad device is in high demand due to the fact that:

The device protects a large area, up to 550 square meters.
Has silent operation.
Differs in compact sizes.
It runs on either batteries or a car battery.

GRR09

This device generates ultrasonic waves in 3 modes and protects rooms with an area of up to 40 square meters.

Using the switch, the necessary operating modes are selected to ensure the fight against both insects and rodents.

EcoSniper

The manufacturing country of Hong Kong presents a magnetic resonance cockroach repeller. The device generates low-frequency waves that have a detrimental effect on the nervous system of cockroaches. As a result of this influence, insects leave the problem area. Many users point out the lack of efficiency of the device.

The device has analogues:

Ixus KY-6182 is a budget option with similar characteristics. Sold in online stores.
Zenet XI-90.
Air Comfort XI-90.

Tornado

It is produced by the domestic industry and has a whole series of “Tornado” devices. In this case, it follows that, in addition to ultrasound, it generates light waves. Installation of the device should be carried out strictly according to the instructions, observing the installation height and angle of inclination, otherwise the effect may be minimal.

Banzai LS 927

Country of origin: Taiwan. According to reviews from many owners, this model is more successful, as it is more efficient.

The device has increased power and insects actually leave the room. At the same time, the instructions indicate that ultrasonic waves have a negative effect on humans and pets.

Verified by Galileo (part 9). Insect repellers

Universal rodent and insect repellers

An innovative professional device produced by the Russian LLC "Ifo-Technology" "GRAD A-1000 PRO" can operate in four different modes, two of which repel rodents, another one repels mosquitoes, and one is intended for other insects. "Grad" services an area of up to 1000 square meters. m and removes all 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 the reviews do not specifically talk about repelling cockroaches. 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 spectrum of radiation 2-50 kHz. No one buys it to fight 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 disappear into the blue distances.

Ultrasonic cockroach repeller "Typhoon LS-500"

There are numerous reviews of it. But they cannot be called positive. No, not like that - a pleasant impression is made by the blinking of the light during the initial period of operation of the device. And out of about thirty reviews, only a tenth of the users were satisfied with the result - the cockroaches abandoned them.

"Typhoon" produced by MNPF "Alex" is also a universal, powerful rodent and cockroach repellent device. The manufacturer claims that special studies have been carried out, and according to their data, the level of insect disturbance in the coverage area of the device is maximum.

And its effect extends over a radius of eighty meters. Another advantage is the ability to install the device at a distance from the outlet, because it is equipped with a long cord. The instructions state that the operation of the device does not affect pets.

Reviews of the Typhoon LS-500 ultrasonic cockroach repeller claim that cats react painfully to its operation, although they get used to it over time.

The most popular electromagnetic devices

Demand for magnetic resonance devices began to grow when consumers became convinced of the ineffectiveness of ultrasonic devices plugged into an outlet, but did not want to give up the idea of a wonderful and easy way to get rid of cockroaches. Manufacturers came up with another unscientific concept for products that create magnetic resonance radiation, and cockroach fighters gladly rushed to buy such products in the hope that they would be more effective. Among such devices are:

Eco-Sniper AR-120, whose name alone hints at general safety. It costs 850 rubles and looks extremely similar to common Chinese products.

Review
And what do you think? This ecosniper is exactly like a Chinese device, only the inscriptions on it are different. It squeaks clearly, scares away mosquitoes, but cockroaches have no place for it. At first we installed it in the apartment, but there was a problem with the cat, because of which the device did not work all the time. At the dacha, the device was not removed from the socket at all, and the cockroaches lived safely behind the wall under the carpet.
Oleg, Moscow

Pest Reject is a device whose manufacturer has made an incredibly successful consumer maneuver: the packaging of the device states that the device is most effective when working together with sticky and insecticidal traps for cockroaches. Indeed, while the traps do their job conscientiously, Pest Reject partially takes away their laurels...

Ixus KY-6182 is a device without any special distinctive features. It just looks, it just turns on. Its effectiveness has not been tested.

Review
Our laboratory, commissioned by an influential organization (I won’t name anyone, so as not to advertise), tested ultrasonic cockroach and rat repellers. We bought all the products that were on the market, installed each one in the center of a large hall, plugged it into an outlet, and placed cages with rats and cages with cockroaches at a distance from it. Then they tracked changes in the behavior of animals and insects when the devices were turned on and off. Of the 24 brands, 2 turned out to be effective, both intended only for industrial use and giving a very powerful signal that is dangerous to humans. So, it is better to prefer a can of cockroach aerosol to ordinary market repellers.
Alexander, Moscow

It turns out that no matter what the electronic cockroach exterminator is, you shouldn’t place much hope on it. And this is easily explained from a purely theoretical point of view.

Cockroach repeller "Tornado"

Another domestic device, or rather a series of devices, is the “Tornado”.

The interesting model “Tornado OT.02” is distinguished by the fact that it emits not only high-frequency sound waves, but also light waves. Anyone who has had to fight cockroaches knows how quickly these insects scatter when the lights are turned on at night in the kitchen or bathroom, their main habitats. Maybe that’s why there are less reviews for this model than for other ultrasonic cockroach repellers.

“Tornado” scares away with light, not ultrasound, but it does scare away. And people share positive impressions less willingly than negative ones.

What is especially interesting about using the Tornado OT.02 device is that it needs to be installed in a special way. Not only at a certain height, slightly above the work surfaces, but under the wall cabinets in the kitchen, but also at a certain angle to the vertical. That is, if this condition is not met for some reason, then the manufacturer is not to blame for the ineffective operation of the device.

However, there is a certain note of optimism in user reviews. Without much confidence, but they say that not immediately, but there are fewer cockroaches, although they do not go away completely.

Homemade "traps"

Many cockroach traps are affordable. But, on the other hand, why pay for something that you can easily make yourself? Primitive and safe models of “traps” are made quickly and work effectively.

Velcro tape

Expected effect. Making cockroach traps with your own hands is quick and easy. You can make a primitive “house” out of cardboard yourself, or you can use a blank in the form of a box, for example, for tea, medicine, or soap. Having run into such a mechanical trap, the cockroach will firmly stick to the “floor” and will no longer be able to get out.

How to do

In the side walls of a homemade cardboard “house” (or a box of any product), cut openings for insects.
Place a layer of double-sided tape on the bottom or pour non-hardening glue.
Place some kind of bait with a bright aroma in the center of the trap. A small piece of smoked sausage or onion is perfect.
As the trap becomes full of stuck insects, replace it with a new one.

Another option for a sticky trap for cockroaches is regular double-sided tape without any additions. At night, cover baseboards with it, as well as floors near plumbing fixtures and the trash can. In the morning you will find a lot of “prisoners” on the sticky tape.

Slippery Bank

Expected effect. Homemade slippery cockroach traps made from a plastic bottle, jar or glass work effectively. The principle of operation of such a device is that a cockroach can easily get inside, but it certainly won’t be able to get out, since the slippery walls create an insurmountable barrier.

How to do

To make a slippery cockroach trap at home, prepare a small glass or jar. You can use a cut plastic bottle.
Lubricate the inner walls of the container with vegetable oil or Vaseline. Do not spare any expense - the surface of the wall should slide well.
Place some strong-smelling bait (sausage, fish, egg) at the bottom. You can also pour beer, in which the cockroach will immediately drown.
Place a wide strip of cardboard or a regular stationery ruler against the container to create something like a “bridge” for insects.

A jar of bait, oil and cockroaches is not a pleasant sight. To disguise this unsightly “picture,” the outside of the jar needs to be covered with a fabric adhesive plaster, paper strips, or simply wrapped in an opaque cloth.

Remember that even the most effective cockroach traps cannot completely solve the problem of household pests. This is a preventative or auxiliary remedy. It is advisable to use traps to control small populations of pests or in combination with powerful insecticidal agents. Don’t forget about maintaining perfect cleanliness in your home.

Video on the topic

Cockroach repeller "EcoSniper AR-120"

This Hong Kong-made device is magnetic resonance and emits low-frequency waves, which are designed to have a detrimental effect on the nervous system of cockroaches, so insects must leave their homes. According to the manufacturer, radiation is transmitted through electrical wiring in the room, even hidden, but without disrupting the settings of home equipment or creating interference. The main thing is to plug it into an outlet as close to the floor as possible.

The main idea contained in the reviews of this ultrasonic cockroach repeller is that the “EcoSniper AR-120” does not help get rid of cockroaches at all. And the spiders, against which the emitted waves must also fight, are also in no hurry to leave their native corners. True, some users speak positively about the silent operation of the device, and some note that especially large cockroaches leave, but the young ones unceremoniously walk right on the device.

And go figure, either adult insects really have a more weakened nervous system, or they are easier to destroy with a slipper.

Tips for choosing a device

When purchasing an ultrasonic cockroach repeller, consider its range of action. It is limited, so you may need multiple devices. Ultrasonic waves are not able to bend around obstacles and do not penetrate walls, furniture or even carpets. Therefore, it is not advisable to use a device with a large range in an apartment consisting of several rooms.

Also pay attention to the type of food. Portable battery-powered models are more convenient for use in the country. Reviews from those who have already tried the device will also help you make your choice.

Safety and effectiveness of ultrasonic repellers

The effectiveness of ultrasonic devices in the control of cockroaches is a controversial issue. Manufacturers assure that they are effective, but many reviews indicate the opposite. There have been no large-scale studies on these issues, so it is impossible to say reliably that ultrasound helps get rid of cockroaches. One thing is clear: such devices do not cause harm to human health. Although sometimes the noise or squeaking noise made by some models during operation is unpleasant.

"Twin Brothers"

The electromagnetic device Ixus-KY-6182 is sold in online stores, the manufacturer of which is modestly kept silent on the sellers’ pages.

Reviews for the Ixus ultrasonic cockroach repeller do not contain even the slightest positive emotions, and there are few reviews themselves. The device is like two peas in a pod, the description of its operation and the characteristics in the instructions are almost the same, only it costs much less. Since it can only be purchased via the Internet, there is no point in dreaming about its effectiveness.

The same twins are the Zenet XJ-90 and Air Comfort XJ-90 devices. In fact, this is one ultrasonic cockroach repeller, the reviews of which are equally negative and harsh. They emphasize that the new name did not in any way affect the performance of the previously tested and completely discredited device.

Types of electronic repellers

The electrical engineering industry today is replete with all kinds of insect control products. Let's look at several devices of different price categories and try to draw a conclusion about their effectiveness.

Typhoon LS-500

Typhoon LS-500 is a Russian development. Device price: from 900 rubles. According to user reviews, it is not the most effective remedy.

In mid-February, a parcel arrived from. Typhoon was hung on the wall in the kitchen. And for a month now, not only have the cockroaches not decreased, but they have also increased. They found a place for themselves behind the device itself and won’t move their ears!

WK – 600

A powerful industrial device with several operating modes: against rodents and insects. The price is quite decent: around 5-6 thousand rubles. Weight: 600 grams. The device is powerful enough to repel not only cockroaches, but also mammalian rodents. Disadvantages: affects humans, suitable for use in industrial facilities.

The work is simply amazing. My neighbor even joked and said I’ll soon complain about you. When we moved, I installed the repeller literally for one day. She came running to us in the morning in shock... She had everything dug up there - they ran away from us. Those. very, very cool, I'm very pleased. We are waiting for this summer, we have a small area - we will install 2 things so that everything is covered.

Zenet XJ-90

Price: about 1000 rubles. Coverage area: 30-40 square meters. The manufacturer offers stylish design and long service life. This device is a modification of the Air Comfort XJ-90, which already has low effectiveness against cockroaches and has earned a bad reputation.

For several nights when this device was running, mosquitoes really did not bother me. Now I understand that they simply were not in the apartment. And then one terrible night it all started! It felt like mosquitoes from all over the area had flocked to us. My husband and I didn't sleep half the night. Then they covered their heads with blankets and passed out. And the “scarer” glowed with its blue eye, but to no avail.

Banzai LS927

Manufacturer: Taiwan. Price: about 1500 rubles. Designed to act against several types of insects. There are two modifications: for industrial use and residential version. The industrial device affects cockroaches, while the apartment version leaves much to be desired.

The LS-927M is noisy compared to home models. But it is not intended for an apartment. We used it in a hangar, before that we tried a regular home model (from a different manufacturer), it got a little better, but the mice still remained.

Also on the market of electronic repellers there is a wide range of ultrasonic devices against cockroaches and other insects. Demand for them increased after users began to refuse to use ultrasound due to its low efficiency. The new generation device was supposed to save users from parasites, but in the end the situation repeated itself: the Internet is full of negative reviews about the work of cheap (1-2 thousand rubles) insect repellent devices. Among them are: Eco-sniper AR-120, Rest Reject, Ixus KY-6182.

Pest Reject cockroach repeller

The Pest Reject electronic ultrasonic cockroach repeller is produced in the USA.

The manufacturer, choking with delight, extols the characteristics of his device with purely American optimism. And the coverage area is large - 220 square meters, and after a week you can already see the results. With such remarkable characteristics, the device is inexpensive. In theory, it should be snapped up like hot cakes and praised at every turn, but there are no reviews for it.

Most likely, because the instructions recommend using traps and gels simultaneously during the first week of use. But if there are effective products in the form of gels, then why do we need a repeller? So that cockroaches develop a strong reflex - where there is ultrasound of a certain frequency, an inevitable and massive death awaits? Then insects will pass this science on from generation to generation and quickly leave the dangerous place when the device is turned on? May be so.

Repeller "Banzai LS927"

The Taiwanese device has more positive reviews than the Typhoon ultrasonic cockroach repeller in terms of its effectiveness on insects. It is more powerful, and indeed after a month the cockroaches leave the room. But the manufacturer honestly warns that the radiation is harmful to people and pets.

It turns out to be a kind of paradox: insects leave the kitchen, this is true, but they go into rooms where the appliance cannot be used due to harmful effects. In this case, why is it needed? You can completely use effective and inexpensive means, for example, low-toxic insecticides.

Why don't electronic devices work?

Electronic repellers work well against those insects that use ultrasound to communicate with their relatives. For example - against mosquitoes. It is enough to turn on the repeller, which imitates the alarm squeak of a mosquito, and the insects will fly away in horror from the place that seems dangerous to them.

But it is useless to use the same insecticides that do not use ultrasound. Cockroaches are just such insects. It doesn’t matter to them whether such a squeak is present or not. Only very high-power ultrasound can create discomfort for them. But the same powerful signal will poison the life of a person, affecting the nervous system.

On a note
As actual experiments have shown, cockroaches are sensitive to ultrasonic agents to the same extent as humans are sensitive to them. In other words, if an ultrasonic device creates unbearable living conditions for a cockroach, the person next to it will also not be able to live normally . The opposite statement is also true: if an electronic device against cockroaches has no effect on humans and domestic animals, then it will make the insects neither hot nor cold.

The same applies to magnetic resonance repellers. Cockroaches react painfully only to electromagnetic radiation powerful enough to affect humans. Therefore, unfortunately, there are no means that are absolutely neutral for people, but help to expel cockroaches from apartments and houses. And most of the devices on the market are a waste of money.

DIY ultrasonic cockroach repeller

In the sacred belief in the effectiveness of repelling insects using ultrasound, but at the same time being afraid of fakes, you can make the device with your own hands. True, not everyone can do this job. You need to understand radio engineering at least at the school club level and be able to work with a thin soldering iron in order to assemble the device.

There is a diagram for a do-it-yourself ultrasonic cockroach repeller and is not uncommon. You don't even need to invent anything. Today, without any problems, you can find diagrams (one of them is presented above as an example), and a list of necessary parts, and a detailed description of what they are needed for, and the sequence of work. Radio components are not in short supply; they can be easily purchased in specialized stores or radio markets. You can make a repeller of the desired power and test its effectiveness in practice for little money, while enjoying your own creativity.

But the trouble is that the shortcomings of industrial devices will not go away in a homemade device. The device will be either ineffective or dangerous for people. Moreover, its appearance will be far from perfect.

What types of electric traps for cockroaches are there?

Electric cockroach traps are produced in the form of metal boxes. You need to put bait inside the device and change it periodically. The smell of the bait will constantly attract insects into the trap, where a high voltage electrical discharge will destroy them.

Over time, cockroach remains will accumulate in the trap, so the device must be cleaned periodically. For this purpose, a special brush is usually included.

Electric trap

Advantages of electrical traps:

no insecticides;
durability;
variety of models;
Availability – devices can be purchased online at any specialty store.

Similar devices have disadvantages:

they must not be placed in damp places;
The devices are powered by electricity, so you need to take care of the safety of children and place them only where children cannot reach them.
high price.

Ultrasonic

A type of electrotraps are ultrasonic traps for cockroaches. They consist of:

a generator that creates high-frequency pulses;
dynamics.

The elements are placed in a box with a plug for plugging into an electrical outlet. Ultrasonic traps, unlike electric ones, do not catch pests, but repel them. The devices emit electromagnetic waves of a certain frequency, causing discomfort in parasites. This forces the insects to leave the room, but they do not die. No additional processing is needed.

On a note! Ultrasonic devices of different powers are produced. Depending on this indicator, there are models with different radius of influence.

However, it should be noted that even in the scientific community there is no consensus on the effectiveness of this device, since it is believed that cockroaches, like people, do not perceive the ultrasonic spectrum, which means expelling them with ultrasound is a very controversial method.

Electromagnetic

The operating principle of devices of this type is based on the use of low-frequency electromagnetic waves. They are reproduced continuously, penetrating through the walls into all rooms of the apartment. The wave propagation area is up to 100 m2. To prevent insects from getting used to the effects of the devices, the electromagnetic coil generates oscillations according to a specific algorithm.

Ultrasonic trap