Question: Dear Orkin Man,
Very recently, I have noticed some mice in my apartment. They are very small, dark colored and move very fast. I haven’t had a good look at them, but I think they are house mice.
I am going to try shock traps to get rid of them, and try to find where they got in. But my question is, do those sonic rodent repellers that plug into an outlet really work?
ANSWER: There is limited data on how well electronic or high-frequency sound devices work for household pest control. These devices may be called ultrasonic, electronic, microvibration or electromagnetic pest repellers. The manufacturers state that they use high-frequency sound waves or electromagnetic output to repel insects (cockroaches, fleas, house flies, mosquitoes, rodents, moles, and other pests). There is truly no data, aside from anecdotal information on various internet sites, as to the effectiveness of these devices.
For rodent control, anecdotal data may indicate that these devices can provide some level of control for a short period of time. But rodents seem to learn to avoid the mechanisms used. Mice quickly become accustomed to regularly repeated sounds. Ultrasonic sounds have limited use in rodent control because they are directional and do not penetrate behind objects. Testing of sound devices shows that about half the sound energy is gone within 15 feet of the device.
It might be best not to completely rely on these devices for pest control. Your best bet is to call your local Orkin Branch Office and have an Orkin Pest Specialist come to your home and provide you with a thorough rodent inspection. Your Orkin Pest Specialist will develop a customized, scientifically proven, treatment protocol that best fits your needs.
The Orkin Man used the information above to also answer the following questions submitted by Orkin.com users:
Question: Do the ultrasonic devices by Vector or any of those other companies work at all?