Usage Tips:While other bat repellants are not pet friendly, don't really work and smell bad, Pest Destruct Ultrasonic Bat Repellent works silently on the human ear, has no odor, completely eliminates bats, and is 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, rats, mice, flies or bugs for you to clean your house, and a unit covers 100-800 square feet. ENJOY LIFE IN A PEST-FREE HOME - While this ultrasonic repellent is designed to eliminate bats, it's also good for mice, rats, flies, bugs, mosquitoes, fleas, and cockroaches. We are real people who use our own products every day. We want the best for our families, and we want the same for yours. Product Specifications 1. Voltage: 100-240V AC, 50/60HZ 2. Power: 2.5w 3. Output audio: 20-65KHz Electrical plug-in installations: No outdoor, hot, water or other liquid or humid environments. Covers 100 to 800 square feet with no obstructions in front of the unit that could block the ultrasound.