But do these devices actually work? Ultrasonic pest repellers are devices that plug into an electrical outlet and, theoretically, emit a sound well outside of the frequency detectable by human ears.

Humane traps do not kill the mice, but you still have to find a place to release the live mouse. Other types of physical repellents include ultrasonic mouse repellent devices. They use high ...

They often work better than homemade bug ... reducing the long-term effectiveness of ultrasonic repellents. Limited Range: The sound waves do not penetrate walls, making it necessary to use ...