Are your pets scratching themselves often? Then you need to try this Ultrasonic Pest Repeller for your Dogs/Cats! This Ultrasonic Pest Repeller for Dogs/Cats eliminates up to 94% of parasites on your pet's body by emitting ultrasonic waves, so it's 100% safe to use. Other collars are full of toxins and can irritate your pet's skin. With only ultrasonic waves, this repeller is free from any harmful ingredients to keep your pet free from fleas and pests.