The CatStop motion-activated outdoor cat deterrent device from Contech can help restore neighborhood ... It detects motion within 280 square feet and emits a loud burst of ultrasonic sound audible ...
The Family Handyman on MSN1y
Ultrasonic Pest Control: Does it Really Work?So, considering that sprays must be re-applied and traps need to be replaced frequently, yes, the ultrasonic device is ...
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