Bests & Worsts Reviews from Amazon

These ultrasonic repellers are you what you should buy if you want the bad cats in your neighborhood to scatter and leave your property alone. For weeks I had a bunch of cats hanging around my front door. They were marking all around my front door and front window, digging up my bark and leaving poop. It wouldn't be long before my two inside cats began retaliating so, I bought these, coyote urine, cayenne paper-based critter deterrent, and mothballs. These ultrasonic repellers are the thing that worked at getting rid of those pesky cats--even the sassy orange one that just wagged his tail and stood his ground whenever I ran outside. And they continue to work. I check my security cameras regularly and I don't see the cats hanging around my house any more. I see them, just not on my property. They walk the long way around my place and head to the neighbors' houses. Here's one video that shows what happened after I installed the ultrasonic repellers. Finally, not only do these repellers work, the company has terrific customer service. About 6 weeks after I purchased these repellers one of them started acting up. I emailed customer service and they took care of the problem quickly and without any hassles. I'm a fan!