Dfunlife Pet&iexcl;&macr;s Ultrasonic Repeller with LED Indicator Repells Flea Ticks and Mosquito Brand new Pets Ultrasonic Repeller with LED Indicator Repells Flea Ticks and Mosquito The Pet's Pest Repeller delivers a continuous pulse that flea, ticks and mosquito cannot stand, thereby repelling insects that can cause harm to your pets and won't harm pets, just repels pests Most effective and safe way to protect pet from any dangerous pest Simply hang to pet neck directly Adjustable collar strap