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.
Being plugged into power sockets, the pest repellent will instantly shoo away harmful pests without any mess or odor. There is no need to clean up dead pests, no bad smell, no battery required, and save a lot of money.