Safe and Eco-friendly: This insect repellent which is made of ABS materials has no harm to humans and pets, no noise, no radiation, and pregnant women and babies can use it with confidence Ultrasonic Technology SupportUltrasonic pest repeller uses 22-65Hz ultrasonic frequency to disturb the hearing of the pest and destroy the nervous system of the pest. This insect repellent can effectively resist most pests and is a perfect substitute for drugs and traps Wide Coverage AreaUltrasonic insect repellent is suitable for an area of 80 ~ 120 square meters. It's widely used in homes, warehouses, offices, gardens, hotels, etc. Since ultrasound cannot penetrate walls and solid objects, it is recommended to put one in one room. For areas where severe pests are severe, we suggest install 2 or more devices. Easy to UseJust plug the rat repellent ultrasonic into a power outlet perpendicular to the floor, And make sure there are no barriers like curtains or cabinets covering in front of the repellent. The spider repellent plug in works automatically and must take some days to work effectively. Multiple ObjectsThe Pest repellent can be applied to repel mice, spiders, insects, mosquitoes, bugs, and ants, You can have this ultrasonic pest repellent for many harmful animalsProducts from Chunchuan's store