CedarCraft Raised Garden Bed 49" X 49" X 6" Ultrasonic and ElectroMagnetic Technology : Babigo bug repellent uses state of the art Ultrasonic and ElectroMagnetic technology to drive pests away , which drive pests out of your home for good. Mice, rats, spiders, roaches, mosquitoes, ants ,snakes , rats; None are immune to the sound and completely leave after a few short weeks of use.Our insect repellent sound is In-Audible to the human and pet's ear . HUMANS & PETS SAFE: No more chemicals and harmful sprays needed, no kill/trap, just repel, inaudible to humans and pets, completely safe pest control solution, eco-friendly and cost-effective. WIDE EFFECTIVE COVERAGE: It is effective in an indoor area up to 800~1200 sq.ft. Cause the solid walls will weaken the effect of ultrasonic wave, we suggest 1 unit per average-sized room.Please note that ultrasonic waves cant travel through walls and solid stuff . EASY TO OPERATE : Simply plug our electronic Indoor Rodent Control in the unit , It works when you notice the green light is on , which is used for minor pest infestation ; Adjust to Purple light mode when you have middle pest infestation , Turning on Red mode when you have terrible pests infestation. LIFETIME GUARANTEE ASSURANCE- Our Babigo R1 Ultrasonic spider repellent is backed by our Lifetime guarantee because we want to help you get rid of those pests and we offer a money back guarantee if you dont see results within 3 weeks. Typical results can take 2-3 weeks depending on the amount of infestation.