YYGIFT Electronic Ultrasonic Pest Repellent Pest Control Equipment for Repels Mosquito Bed Bugs Mice Flies Cockroaches Ants Spiders and Other Insects Effective Range:80-120 square meters in rooms.It is better to install one item in each room. Non-toxic and Tasteless:It is safety and environmental friendly. The Pest repellent works with electronic ultrasonic frequency which can annoy and repel small insects,but it is safe for human and pets. With the help of this pest repellent you can get rid of most insect pests which bothering you in your home. Ideal pest control for repels ants,roaches,spiders,mosquitoes,small rodents,mites and more Other Insects.