WePest Ultrasonic Pest Repeller - Electronic Indoor Plug-In Pest Repellent, Repels Rodents, Insects, Mice, Rats, Cockroaches, Spiders, Ants, Mosquitoes and many more ULTRASONIC & ELECTROMAGNETIC TECHNOLOGY: Our 2X ultrasonic speakers are most unique and most innovative pest repeller design, with 3 adjustable frequency switch function, giving you more control over the effective coverage area. Our ultrasonic speakers produces sound waves at an automatically adjusting alternating frequency & decibel. The ELECTROMAGNETIC function delivers micro bursts of electromagnetic vibrations through homes electrical lines to drive pests and insects living within walls. LATEST INNOVATIVE TECHNOLOGY: By combining both our ultrasonic & electromagnetic functions you have the most effective pest repeller to date. The ultrasonic function has a special automatic switch between frequency & decibel penetrates deep into the rodents and insects completely disrupting their nervous system. This is an unbearable and insufferable feeling for both rodents and insects causing them to vacate the area in order to find a more habitable area to nest and live away from your home. COMPLETELY SAFE & EASY TO USE: It uses natural elements to chase rodents & insects out of your home. It is completely safe to use around your pets (excluding rodent & insect pets) and your family. By driving the pests out of the house you don't have to deal with the horrible mess of cleaning up after the pests. SAVE MONEY: It uses very economical power saving technology to product the best power to effectiveness ratio, meaning the pest repeller uses very small amount of power to provide a very large area of protection thanks to great innovation by the engineering team. YOUR SATISFACTION GUARANTEE: We understand that everyones infestation is different you should see results within the first 2  3 weeks depending on your infestation. If you have a high infestation the results may take up to 3  5 weeks.