Easy to Use - Just plug the electronic pe-st control ultrasonic repell-ent in power sockets; It will start to repel the pe-sts when the blue light on | Wide Coverage: Each insect repell-ent 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 protect the whole family from insects | Effective for most the pests: install one pest repe-ller throughout each room for full coverage, repelling rodents, bugs, cockroaches, ants, insects and more | Safe for human and pets： The electronic pest repell-ent is safe for pregnant woman and baby,and No need to clean up dead pests, no battery required and cost little electricity. Gives you a Safety and Eco-friendly home. | How it Work and What Can Repel: The ultrasonic pest repell-ers adopt the high-frequency ultrasonic technology to disturb and irritate the nervous system of pests, to make them uncomfortable and force them to leave your home.