Pet Dog Cat Protection Pest fleas, ticks, and mosquitoes Ultrasonic Repeller the most effective and safest way to protect your pet from almost any dangerous pests It delivers a continuous pulse that flea, ticks and mosquito cannot stand Using Ultrasonic Pest Repelling Technology with no odors or chemicals repelling insects that can cause harm to your pets and won't harm pets 3pcs AG13 button batteries and Adjustable Strap