Ultrasonic all Digital Electro Magnetic Mosquito and Pest Repeller. Now you do not need to call exterminator and use harmful chemicals in your home.  The Ultrasonic pest repeller works 24/7 it creates an invisible electromagnetic waves in protected area that is totally harmless to humans and pets but not liked by pest.  You will see pests move away from this electromagnetic shield. Each Quito Mosquito and Pest repellent covers approx. 500 sq. ft. area.  If you apply overlapping protection the pests will be gone.  It is safe and effective. ELIMINATE PESTS FROM YOUR HOME: Ultrasonic Pest Repeller uses state of the art ultrasonic technology to drive pests away. Plugged in to any standard household outlet it uses low frequency sound waves, inaudible to humans and pets, which drive pests out of your home for good. Mice, rats, spiders, roaches, mosquitoes, ants; none are immune to the sound and completely leave after a few short weeks of use.SAVE HUNDREDS ON PEST CONTROL: STOP spending hundreds or even thousands of dollars of costly pest control services. Let the Quito Mosquito repeller drive out pests for a fraction of hiring Pest Control services on a MONTHLY basis.NO HARMFUL CHEMICALS OR POISONS: Forget the harmful chemicals, poisons, and traps typically used in households and by pest control technicians. This 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.EASY TO USE: Simply plug in the unit and let the Quito Mosquito & Pest Repeller do the rest. 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. It can be used indoor or outdoor in covered area or patio the Electromagnetic field is more scattered in open area so you may want to use more than 1 in outdoor area to get good protection. There is nothing to replace or recharge or refill all you have to do is plug it in and let it do the work.   Buy Multiples and save put one in every Room, RV, Boats and places you think will be infested by pest.** 90 Day Warranty on product.