General description While other bat repellents are not pet-friendly, don't actually work, and smell bad, the Pest Destruct Ultrasonic Bat Repeller is quiet to the human ear, has no odor, eliminates bats perfectly, and is 100% safe for children and pets. This ultrasonic bat repellent works on a biological level, emitting ultrasonic waves to repel bats and other unwanted guests in nature, meaning you don't have to deal with dead bats, mice, rats, flies, or insects. Technical specifications Coverage area: 100 to 800 square feet Device type: Ultrasonic repellent Usage This ultrasonic repellent is specifically designed to eliminate bats, but it also works on mice, rats, flies, insects, mosquitoes, fleas, and cockroaches. Ensure there are no obstacles in front of the device that could obstruct the ultrasonic waves. Other information No outdoor, hot, water, or other liquid or humid environment.