WHILE OTHER BAT REPELLENTS are not pet friendly, don't really work and smell bad, this works silently for the human ear, does not smell, perfectly eliminates bats and safe for children and pets.HOW IT WORKS - This Ultrasonic Bat Repellent works on a biological level by sending out ultrasonic waves to send bats and other unwanted guests back to nature. This means no dead bats, mice, rats, flies, or bugs for you to clean out of your houseMore than 80 square meters (open space)ENJOY LIVING IN A PEST FREE HOME - While This Ultrasonic Repellent is specifically designed to eliminate Bats, it also works on Mice, Rats, Flies, Bugs, Mosquitoes, Fleas, and Cockroaches.WE ARE REAL PEOPLE WHO USE OUR OWN PRODUCTS every day. We expect the best for our family and want the same for yours.Product Specifications1. Voltage: 90-250V AC, 50/60HZ2. Power: 2.5w3. Output Audio: 20-65KHzElectrical plug-in device: no outdoors, hot, water or other liquids or humid environment.Dimensions: 95x60x58mmPacking List: 1 x Insect repellent