Our insect repellent plug-in tool comes in a pack of 3 and each device covers up to 1000-square footage. Use it to control cockroaches, bugs, insects, and rodent infestations in your home. If you are in immediate need of an indoor pest control solution, our RIDDEX Ultra Sonic Plus pest repeller is an easy way to drive them away with our ultra sonic technology. REPEL INSECTS AND RODENTS Our number 1-goal at RIDDEX is to create innovative products based on the latest technology that are gentle for our environment and customers. Our ultrasonic pest repeller plug in is a multifunctional pest repellant that works by using ultrasonic waves and is inaudible to humans. HAVE A 1000 SQUARE FEET FORCE FIELD Whether you are struggling to keep bugs, insects, and rodents out of your house, our pest repellent ultrasonic plug in is a proven and effective system that will defend against existing pest problems and help safeguard your home for future pest control issues. At RIDDEX, we have 3-choices of plug-ins to choose from. Depending on the magnitude of your pest infestation, you have options. Our paclk of 3-ultra sonic pest control devices is for indoor use to make sure you are getting that protective shield that you want and deserve.