I gave this to my neighbors because my cats were scratching and defecate in their beds. They have children and can not put repellent in the garden. The solution was to ultrasound. My neighbors have installed the device on the other side of the house (where children do not play). The area covered by the ultrasound is sufficient to keep the cats around their home. I was not sure if it would be effective ultrasonic repellent, obviously it works !!!! More cats soiling flower beds! My neighbors are satisfied and so too !!!
