Do Ultrasonic Pest Repellers Work? Exposing The Controversy

Ultrasonic pest repellers are very useful products simply because they can provide owners with a safe and hassle-free option against pests. These devices can easily keep a wide range of pests away from your home without using hazardous chemicals, and without having to kill them through traps.

Unfortunately, there are some people who say that these products did nothing for their own pest problems. Since this product does not directly cause harm to the pests, and because they do not create a physical trap or barrier, a lot of people are also wondering if it can actually help them control pests.

I put up this article to hopefully shed some light on the effectiveness of ultrasonic pest repellers. I want you to know more about how this product works so you will be able to understand its limitations. Keep in mind that people have complaints about this product because they expect more from it.

How Do Ultrasonic Pest Repellers Work?

This device is basically marketed as a green alternative to those who want to avoid pesticides, rodenticides, and traps. They typically make use of high frequency sound which is inaudible to humans, but is unbearable to rodents and insects, to keep them away from certain areas of the house.

Ultrasonic devices however, will only be able to emit short wavelength sounds. This simply means that most of these devices are not capable of covering large areas. The human ear is only able to hear sounds below 20 kHz, but bats, rodents, locusts and other insects can hear easily sounds above it.

These devices are not actually new inventions, the use of sound to repel pests was first developed in China when they first discovered that they could use devices which were manually operated to produce sounds that can scare insects and other pests away from their farms, gardens, or crops.

Although we use something more high-tech today, the idea is still very similar. Our modern devices still use sound in order to cause confusion, convulsions, and even panic among pests, making them feel anxious or distressed so that they will want to go to a much safer and peaceful environment.

What Kind Of Pests Will It Repel?


Different pests are able to hear different levels of sound frequencies. This is why products that are meant to deal with animal, especially pests, need to produce sound at a wide range of frequencies, usually from 50 kHz to 100 kHz. This will allow the product to repel of bats, rodents and even stray cats.

There are also some products that can work well specifically against insect pests. They are designed to produce sounds beyond 20 kHz so that they can repel moths, grasshoppers, cockroaches, ants as well as spiders. These products can be used at home to help keep insects away from important areas.

Some products will also produce sound frequencies at a very wide range to repel both animal and insect pests. However, they can also affect pets such as hamsters and rabbits. This is why you might want to avoid using this type of ultrasonic pest repellents if you have these kinds of pets in your home.

What Is The Controversy Behind The Ultrasonic Pest Repeller?

With the intervention of the Federal Trade Commission, the ultrasonic pest repeller has been urged to show results first before they make outlandish claims. In the pasts, these products were not tested or regulated in any way, this gave the manufacturers the opportunity to take advantage and use false advertising.

When the FTC issued warning letters to these manufacturers, they were forced to provide scientific evidence to support their claims. In 2002, Kansas State University, conducted studies on these devices and they were able to find out that the ultrasonic pest repellents showed mixed results.


These devices were effective against pests such as crickets, but they were not able to show any effect on ants and cockroaches. Some of the pests also got used to the sound over time. Although this should have put the controversy to rest, there are still a lot of people today who swear by its effectiveness.

Another problem that this device is also known to cause is that the sound that it emits can cause distress in pets, and that it can also mute hearing aids. Some have also reported that it can also interfere with the clarity of telephone lines. The sound that these devices emit are also unable to pass through walls.


dead cockroaches

When it comes to using ultrasonic pest repellers, you need to keep in mind that these devices are only meant to support your active efforts against pests in your home. These devices cannot be used as your main weapons in fighting against infestations as they only serve as green alternatives.

Although there are a lot of people who complain about how ineffective they are, there are also those who say that when used properly, they are able to keep pests away from their houses. Either way, you need to be mindful of the scientific studies behind the claims so that you will have realistic expectations.

Since the device will only be able to emit short wavelength sounds, it will only work on small areas and the sound that it creates will not be able to pass through walls and other obstacles. This is why it is crucial for homeowners to put this device in strategic areas where it can provide the maximum effect.

Since this product is known to cause interferences in hearing aids, telephones, and even in security systems, you should consider using it away from other electronic devices. You should also avoid using it if it does any harm to your pets inside or outside the house.

You should also consider using multiple devices in the home. You cannot expect one repeller to be able to cover your entire property. In order for the high frequency sound to work, you should put it in different areas, otherwise, the pest will simply transfer from one room to another.

About the Author Emily Taylor

My name is Emily Taylor, gardening is my passion and I’m looking forward to sharing it with everyone. I know that there are millions of people out there want their backyard and garden be attractive just like their front yard, so I am here to help you create your own backyard paradise.

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