Electronic Plug In Pest Repeller - 2018 Upgraded High Frequency Ultrasonic Sound Eco Humane Home Indoor Mice Rat Rodent Repellent Control Works w/ Mosquito, Rats, Bug, Cockroach - SereneLife PSLPST13 Ultrasonic frequency: the SereneLife electronic pest control delivers 20Khz to 65Khz ultrasonic wave that emits high frequency sound to effectively repel pests. It works with unwanted bugs, insects, rats, mice, rodent, cockroach, mosquito, fly, etc Eco-friendly: The vermin trap offers you an eco friendly and humane way of eliminating rodents and other pests inside your house without the need for harmful toxic chemicals. Safe, non-poisonous, and reliable. Perfect for indoor, home or office use Plug-in operation: just simply plug it into a wall socket above the floor. Switch between ultrasonic, ElectroMagnetic, air purifying and O3 functions. It will emit ultrasonic waves to repel pests. Use continuously for 2-4 weeks for desired results Built-in air purifier: The repelled is equipped w/ a built-in air purifier - anion function which makes the air fresh and removes bacteria which also lure and attract unwanted pests. Also has a night light function makes it perfect for bedroom use 2, 500 sq Ft coverage: This pest Eliminator Device has a coverage area of up to 2, 500 Square feet ensuring your home and family protection from pests and the diseases it may bring. Features a compact design W/ engineered ABS housing construction