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.

Ultrasonic sound is punishment. The higher the frequency, the more harm. The longer you hold your finger on the control ...

What are ultrasonic training devices and how do they work? These ultrasonic behavior deterrents work by emitting a high-pitched sound when activated. The anti-bark systems detect barking and emit ...

The sound waves are usually confined to a specific area, determined by the device's power and placement. Pests Affected by ...