Safe and Eco-Friendly—No poisons, traps, chemicals and killing needed as the insect repellent is 100% 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 remover plug-in works automatically and should take a few days to work effectively. Variety of Uses and Full Coverage—Widely used in home, warehouse, office, garden , hotel, etc. Energy saving, protect you from pest intrusions all day long without worrying about your bill. Since ultrasonic cannot penetrate through walls and solid objects, it is recommended to put at least one pest repellent in a room. Advanced pest control technology—The insect repellent