VEPOWER BEST PEST ELIMINATOR : This Ultrasonic technology drives insects and pests away. Plugged in to any standard household outlet Rid-Tech uses low frequency sound waves, inaudible to humans and pets, which drive pests out of your home for good. EFFECTIVE: Works for Mice, rats, spiders, roaches, mosquitoes, ants. None are immune to the sound and completely leave after a few short weeks of use. NO HARM: Forget the harmful chemicals, poisons, and traps typically used in households and by pest control technicians. Rid-Techs Pest Control Repeller is 100% safe and effective. Rid-Tech Naturally drives pests out without killing them. No need to clean up dead insects and rodents. Rid-Techs Ultrasonic Pest Repeller creates an uncomfortable environment for pests so they simply leave. SIMPLE PLUG IN : Simply plug in the unit and let the Repeller do the rest. INDOOR/OUTDOOR: Use 1 unit per average-sized room with a pest problem. Additional units will be required in larger areas. Areas such as attics, basements, garages and large storage areas may require more than one unit. Perfect Accessory for Indoor and Outdoor Rodent Control.