PestPRO Professional Electronic Pest Repeller by TinkrTec with Adjustable Frequency &ndash; Ultrasonic Pest & Mosquito Repellent - Natural and 100% Safe! 100% EFFECTIVE & 100% GREEN, HUMANE & SAFE - The PestPRO is a simple, hygienic, and environmentally friendly way of getting rid of mice, cockroaches, ants and spiders all without any harm to humans or pets! PROPRIETARY TinkrTec ADJUSTABLE FREQUENCY - PestPRO uses a proprietary ultrasonic technology algorithm that is powerful and effective on all unwanted pests! On top of that, you have the ability to adjust the frequency from 30 to 70Khz! This unique feature will ensure that the pests do not become accustomed to the patterns and rhythms of the device! NO OTHER DEVICE HAS THIS! ELIMINATES ALL TYPES OF RODENTS, PESTS & EVEN INSECTS  Get rid of unwanted pests without using toxic chemical sprays or traps that can severely harm you, your family, your pets and even plants! The PestPRO will work for Rats, Mice, Ants, Roaches, Spiders, Bugs and many more! LARGE COVERAGE AREA - The TinkrTec PestPRO Ultrasonic Pest Repeller is effective for an area up to 500 Square Feet. Please note that ultrasonic waves cannot travel through walls. Though our unit works very well, if you have a large infestation, we recommend placing one in every room! SATISFACTION GUARANTEE OR YOUR MONEY BACK!  The TinkrTec PestPRO Pest Repeller is backed by our Lifetime Satisfaction Guarantee. We love our customers and understand your frustration with an infestation and your skepticism. For this reason we offer a full money back guarantee if you do not see an improvement after 30 days of use. The PestPRO has a lifetime warranty! If it should break at any point in your ownership, just contact us so we can replace it for you!