There is no scientific proof that ultrasonic pest repellers work. In fact, the Federal Trade Commission has charged many manufacturers of these devices with false advertising and forced them to return their products.

Most studies have found that even when these devices do repel vermin, their effect is usually short-lived. Mice and rats, for example, quickly acclimate to the sound and stop reacting to it altogether.


Ultrasonic pest repellers use high-pitched sounds that are beyond the range of human hearing to scare insects and rodents away from homes. This method is generally considered safer than traditional pest control products, such as chemicals and traps. However, some people have reported that these devices don’t work as well as they should. Whether or not ultrasonic pest repellents work depends on several factors, including room size and the sound intensity of the waves. In addition, they are not suitable for pets such as cats and dogs, who can be distressed by the high-pitched noises.

The effectiveness of an ultrasonic pest repeller is also influenced by the type of pest you are trying to repel. Different types of pests respond differently to the sounds, and some do not react at all. Rodents, for example, tend to acclimate to the sound and will stop responding within a few days. This is why it is important to select a device that is designed for the type of pest you are trying to repel.

Another factor that influences the efficacy of an ultrasonic pest repeller is its coverage area. Most devices claim to cover a certain amount of square footage, but it is important to remember that walls and other obstacles will limit the area where the sound waves travel. If you have a large space, it is a good idea to use multiple devices to ensure that the sound waves reach all corners of the room.

Depending on the manufacturer, some ultrasonic pest repellers emit a higher or lower frequency of sound waves. The higher the frequency of the sound, the more effective it will be at repelling pests. In general, ultrasonic pest repellers are most effective for small infestations and do not work as well in larger spaces.

If you are looking for a chemical-free pest control option, consider using an ultrasonic pest repeller in conjunction with other traditional methods such as bait traps and poison. The combination of these methods will increase the odds of successfully controlling the problem. In addition, you should consider using exclusion devices to prevent pests from entering your home in the first place. These include one-way doors, chimney caps, insect screens, and plant covers. You can also try integrated pest management (IPM) for a more holistic approach to pest control.


Most of the devices sold on the market claim to use “safe & effective technology to extremely irritate rodents and insects, thus driving them away from your home”. They also say that they are harmless for humans. However, the claims made by manufacturers are often not backed up by any scientific evidence. In addition, most studies on these devices are very limited and don’t control for other factors that might affect the outcome. For example, one study found that ultrasonic repellent devices did not help to reduce the number of Indian meal moth larvae.

Another issue is whether or not these devices are safe for cats and other pets. An Akron pest control company stated that cats are sensitive to the high frequencies used in ultrasonic pest repellers. The sound may be unsettling to them and could make them agitated or uncomfortable, depending on the volume of the sounds. These sounds may also disrupt their sleep, which can lead to stress and anxiety. In some cases, the loud noises from the devices can even cause seizures in certain cats.

The makers of ultrasonic pest repellers argue that the sound waves emitted by their machines disturb the hearing of unwanted insects and animals, forcing them to leave your home. The device’s manufacturers also claim that the noise can deter pests by sending them on a mental journey, making them feel fearful and uncomfortable.

But many homeowners have questions about the safety of these devices. Especially since they don’t use any chemicals or radiation. According to experts, there is no proof that these devices are safe for cats or other pets. While the high-frequency sounds may be harmless to humans, other pets like rabbits and hamsters can hear these sounds and are highly distressed by them.

Some pet owners claim that ultrasonic pest repellers work well for them. But others have experienced that they don’t work, or aren’t as effective as other methods. The truth is that there are few ways to effectively get rid of pests in your house without the help of state-certified professionals. Besides, there are a lot of things you can do around your home to prevent pest infestations, such as sealing gaps, repairing screens and moving the firewood pile.


Ultrasonic pest repellers emit high-frequency sound waves that supposedly repel household pests, such as cockroaches, crickets, bed bugs, and rodents. These sounds are inaudible to humans, but allegedly disrupt the pests’ ability to communicate and breed. According to the manufacturers of these devices, they also irritate and confuse pests, making them more likely to flee their homes. These devices are marketed to homeowners who want to use a non-toxic alternative to traditional pest control methods, such as insect traps, sprays, or poisons.

However, many experts have questioned the effectiveness of these devices. According to studies conducted at the State University of Campinas in Brazil and Northern Arizona University, ultrasonic pest repellents do not work as advertised. Some of these devices have even been shown to increase mosquito bite rates. Furthermore, the Federal Trade Commission (FTC) has warned that claims about the effectiveness of electronic pest repellers must be backed by scientific evidence.

Despite the lack of scientific evidence, these devices continue to be sold online and in stores. Moreover, the products often receive glowing customer reviews on sites like Amazon. However, these reviews do not reflect real-world results. In fact, most of the positive reviews are fake. These reviews are generated by the same people who have a vested interest in selling these devices.

In addition to being ineffective, ultrasonic pest repellents can also be dangerous to pets. For instance, they can be harmful to pet rabbits, hamsters, and guinea pigs, who can hear sounds up to 90 kilohertz (kHz). Additionally, the noises may cause stress in cats and dogs, which can lead to behavioral changes and hyperactivity.

While it is not clear whether these devices actually deter pests, many people buy them as a precaution to prevent critters from entering their homes. They are also an attractive alternative to traditional pest control methods, such as sprays and traps, which can contain toxins and explosive contents. In any case, it is best to consult a certified pest specialist before using a pest repeller in your home.

Environmental impact

Many people want a safer, more environmentally friendly alternative to traditional chemical pest control methods. This has led to a boom in sales of ultrasonic pest repellers, which are marketed as plug-in devices that emit high-frequency sounds that repel pests. These sounds are said to disrupt the nervous systems of rodents and other pests, causing them to leave your home or garden. They’re often sold on mail order companies, home shopping cable channels, and in gardening magazines. However, they’re not as effective as advertised and may even be harmful to humans and pets.

Most scientific studies have found that commercially-available ultrasonic pest repellents don’t work. Moreover, they’re rarely effective against specific pests such as cockroaches, mosquitoes, bed bugs and rodents. In some cases, the noises emitted by these devices may cause distress in cats and dogs. They can also disturb other household animals such as hamsters, rabbits and domesticated rodents. These devices may also disrupt your sleep, as the sounds can be quite disturbing for some people.

In addition, some of the ultrasonic frequencies emitted by these devices are blocked by walls and furniture. These sounds are also absorbed by other sources of sound in the environment, such as music or conversation. Moreover, they can interfere with the quality of your Wi-Fi connection and landline telephone. They can also disrupt hearing aids and other electronic devices.

It’s also important to consider the effect that these devices have on other household members, such as children and teenagers. These sounds can be distressing for some people, especially young children and those with sensitive hearing. In some cases, they can also lead to headaches and other symptoms.

The ultrasonic noises emitted by these devices can also be irritating for some types of pets, including cats and dogs. They can irritate cats’ sensitive ears by making them unable to hear other sounds. In addition, they can irritate other pet mammals such as hamsters, rabbits, and guinea pigs. These sounds can also cause stress in cats, as they are obligate carnivores that hunt for their food by using their sense of hearing.