While other bat repellents are not suitable for pets, do not use them; Pest Destroying Ultrasonic Repellents don't really work and smell bad, work quietly on the human ear; Odorless, perfect for killing bats, great safe for kids and pets. How It Works This ultrasonic bat repeller works on a biological level by sending ultrasonic waves to drive bats and other unwanted guests back into the wild. This means no more cleaning up dead bats, mice, rats, flies or insects in your home. A unit ranges from 100 to 800 square feet. Enjoy life in a pest-free home - While this ultrasonic pest repeller is specifically designed to kill bats, it also works on mice, flies, insects, mosquitoes, fleas, and fleas. cockroach. product specification 1. Voltage: 100240VAC, 50/60HZ 2. Power: 2.5W 3. Output audio: 2065KHz Plug-in appliances: No outdoor, hot water, water or other liquids or humid environments. Coverage ranges from 100 to 800 square feet with no obstacles in front of the unit that could block the ultrasound.