Set Of 4 Ultrasonic Pest Repeller Electronic Way to Control Pests, Non-toxic & Eco-Friendly Device. Repels Rats, Mice, Roaches, Flies, Spiders, Other Insects. Home Pest Control, Repel - Black ULTRASONIC PROTECTION FROM ALL PESTS  Ultrasonic Pest Control uses state of the art ultrasonic technology to drive pests away.  Plugged in to any standard household outlet. The device uses low frequency sound waves, inaudible to humans and pets, which drive unwanted pests out of your home.  Eradicates insects and rodents, none of them are immune to the sound and will completely leave after a few short days of use. LATEST TECHNOLOGY & EASY TO USE  So simple to use, as all you have to do is plug it in (set it and forget it!)  Use in any areas that are susceptible to bugs, rodents, insects, flies, spiders, mice, roaches or any other unwanted creepy crawlers or critters! CHILD AND PET SAFE BUT DETERS UNWANTED CRITTERS  Whether you're trying to get rid of mice, rats, spiders, flies, mosquitoes, roaches or any other bugs, insects or rodents, this pest control device will eliminate the problem each and every time!  It is also one of the only pest control devices that is child and pet safe ENVIRONMENTALLY-FRIENDLY // NON-TOXIC, NO CHEMICALS  Forget the harmful chemicals, poisons, and traps typically used in households and by pest control technicians.  UltraSonic Pest Control Repeller is 100% safe and effective.  It is the best high-tech electronic pest repeller which creates an uncomfortable environment for pests so they simply leave.  No need to clean up dead insects and rodents anymore as these devices will make them move on to another home or simply just outside for good! 100% LIFETIME MONEY-BACK GUARANTEE  We stand behind all our products fully, and offer you a no questions asked 100% lifetime money-back guarantee!