How It Work: Ultrasonic pest repeller works by invisible electromagnetic waves. The ultrasonic pest repeller is very effective in pest control and keeps pests and mice away from your home or office Quiet And Effective: Ultrasonic pest repellers work with low frequency ultrasonic waves, which are difficult for humans to hear. But it is very effective for rodents and pests, ultrasonic waves let them leave your home quickly Easy To Use: Being plugged into power sockets, the pest repellent will instantly shoo away harmful pests without any mess or odor. No need to clean up dead pests, no bad smell and Corpses, no battery required and save a lot of money Effective For Most The Pests: Install one pest repeller throughout each room for full coverage, repelling rodents, bugs, cockroaches, ants, insects and more Wide Coverage: Each insect repellent covers an area of up to 1600 square feet. It’s widely used in homes, warehouses, offices, gardens, hotels, etc. Only a few products are needed to