✔️SAFE AND ECONOMICAL - Different from chemical, this product is safe for human and pets. It uses ultrasonic frequency (22-65Khz) sound waves to drive pest away and takes 3-4 weeks to make effect. ✔️EASY TO USE - Just plug it into the socket and let it do the rest, no more to do. ✔️WIDE EFFECTIVE COVERAGE - Effective area up to 80~120 Square Meters. Since ultrasonic sound cannot penetrate wall and solid object, one room one unit is recommended. ✔️USE FOR MANY PESTS AND PLACE - Work on spiders, mice, mosquitoes, rats, roaches, ants and etc. Suitable for kitchen, Living Room, bedroom, bathroom, warehouse and basement. ✔️PLEASE NOTE - If you have a hamster pet at home, please do not use this product.