Sonic Pest Repeller Cats. Cats are generally less likely to attack when they are repelled with an ultrasonic repeller. Like other similar products, it works by detecting any change in heat signature within its vision of detection, and then emitting an ultrasound which apparently irritates or annoys cats (very young children and teenagers can also hear it apparently).
Cats can actually hear more sounds at a higher pitch than most dogs,. Best sonic cat repellents based on packaging, brightness, easy to install, value for money; Manufacturers of ultrasonic mouse repellers claim that such devices do not harm cats just as they don’t harm dogs.