<strong>Smart Technology:</strong> This ultrasonic mouse repeller emits different frequencies of ultrasonic waves (25kHz-65kHz) to irritate the nervous system of insects and rats, making them feel uncomfortable and gradually flee . Intermittent changes in ultrasonic frequency prevent them from developing immunity and adaptability. <strong>Great Coverage:</strong> Each ultrasonic repeller can cover up to 120 square meters. It is recommended to install this hammer vertically at a distance of 20 to 80 cm from the ground. For best results, equip each room with a pest repellent. <strong>Safe and Eco-Friendly Mosquito Repellent Control:</strong> Non-toxic, no chemicals, no radiation, less consumption energy saving, no noise and 100% safe for human and pets, you will say goodbye to mouse traps, mosquito traps, mouse pads, pest control poison, and insect sprays etc, No battery needed will make you save lots of money, give you a 100% safe and eco-friendly home. <strong>Super Quiet and Effective Mosquito Repeller:</strong> Ultrasonic repellent works with low frequency ultrasonic waves, it therefore allows you to control pests completely silently and cannot disturb you and your pets. Please note that it requires a process. Depending on the environment, the response time varies, usually 2-6 weeks, we are sincerely here to help you keep the pests away. <strong>Easy to use:</strong> just plug the repellent into the outlet and let it run. The repellent instantly repels pests without killing them. No batteries are needed, saving you a lot of replacement.