WHILE OTHER SQUIRREL REPELLENTS are not pet-friendly, don't really work, and have unpleasant odors, the Pest Destruct Ultra Squirrel Repeller operates silently, is odorless, effectively repels mice, and is safe for children and pets. HOW IT WORKS – This ultra squirrel repeller uses biological principles by emitting ultra waves to deter squirrels and other unwanted pests, encouraging them to leave the area naturally. There are no pests to clean up. One unit covers an area of 100–800 sq ft. ENJOY LIVING IN A PEST-FREE HOME – While specifically designed to repel squirrels, this ultra device also helps deter mice, rats, flies, bugs, mosquitoes, fleas, and cockroaches. Product Specifications: 1. Voltage: 100–240V AC, 50/60Hz 2. Power: 2.5W 3. Output o: 20–65kHz This is an electrical plug-in device. Not intended for outdoor use. Avoid use in hot, wet, or humid environments. For best results, ensure no obstacles block the front of the device to allow proper dispersion of ultra waves. Coverage range: 100 to 800 square feet.