ZeroBugs™ PET Ultrasonic Flea and Tick RepellentProtect your pets at all times! Environmentally friendly device against fleas and ticks Light and comfortable to wear, thus is the ideal, non toxic, environmentally friendly solution to prevent and counter the presence of ticks and fleas on household pets without using any potentially harmful chemicals. The steady action of this repellent reduces the risk of colonization by ticks and fleas and thus the likelihood of infestation by parasites, possible