Newest Chips Technology - Adopting the latest dual-chip, this Pest repellent emits different frequencies of ultrasonic waves to irritate the nervous system of insects and rats, making them feel uncomfortable and flee away gradually. 6 Pack Easy To Use - Just plug the pest control repeller into the socket. Please make sure to install it vertically 80~120cm away from the floor. And make sure there are no barriers like curtains or cabinets covering in front of the repellent. Use for Many Pests and Place - Ultrasonic Pest Repeller can be used in various places, such as Bedrooms, Bathrooms, Garages, Kitchens, Offices, Warehouses, Flour processing plants, food processing plants, Furniture shop, etc., that cannot use baits or pesticides. Wide Effective Coverage - The Adopt Imitation sound wave technology & latest ultrasonic Pest Repellent is effective for an area up to 800- 1200 square feet. For the best result, equipped each room with one pest repellent. Safe for Child and Pets - This pest control consists of high-quality ABS fire-proof materials and uses less than 5 W of electricity. For child/pregnant women/The aged/pets, pest Repeller is safe and not interfere with domestic appliances.