Safe and Environmentally Friendly---No poison, traps, chemicals, or killing required because the insect repellent is safe and harmless to humans, children, and pets. The ultrasonic sound is inaudible to humans and pets, no noise, no radiation, and pregnant women and babies can use it with confidence. Lightweight Design and Easy to Use---The ultrasonic pest repeller is portable and easy to install, just plug it into power outlets and make sure there are no barriers like curtains or cabinets covering in front of the repeller. The spider repellent plug-in works automatically and should take a few days to work effectively. Variety of Uses and Complete Coverage---Widely used in homes, warehouses, offices, gardens, hotels, etc. Energy saving, protects you from pest intrusions all day long without worrying about your bill. Since ultrasound cannot penetrate through walls and solid objects, it is recommended to put at least one pest repeller in a room. Advanced Pest Control Technology---The ultrasonic pest repeller is equipped with the latest ultrasonic physical technology and a heat dissipation system. This mouse repellent emits different frequencies of ultrasonic waves to irritate the nervous system of various pests such as rats, mosquitoes, ants, cockroaches, spiders and more. Excellent After-Sales Service---Please note that you can see results within 2-4 weeks. It is normal to see pests increase in the first 2 weeks as they are repelled from their home. The reduction in pest activity should occur within 2-3 weeks. If you have any questions, please contact us directly, we will help you solve them. Features Our pest repeller applies the latest ultrasonic technology to extremely irritate the hearing and nervous system of pests and rodents, to make them uncomfortable, which keeps them away from your house and dare not enter your house again. This pest control can be used anywhere in the house, such as kitchens, bedrooms, basements, garages, warehouses, etc. To achieve a better effect, it would be better to place a device in each room and avoid carpets, curtains and those fixing materials around the device. You just need to plug in the socket and the product will be in normal working condition, no more chemicals, no insecticides, no poisons, without eliminating any insects or rodents, leaving no mess to clean, your house will not have strong odors.