Darn Tough Vermont Women's Mini Flower Crew Light Cushion Hiking Socks 67% Merino Wool/31% nylon/2% Lycra Spandex Made in the USA and Imported ADVANCED DUAL-CHIP TECHNOLOGY: The SavHome ultrasonic pest repeller repels bugs by emitting ultrasonic wave of different frequencies. Keep bed bugs, spiders, ants, cockroaches, mice, and others away from your house. Nice incests repellent plug in. PHYSICO-INSECTICIDE & ECO-FRIENDLY: No chemicals, No poisons, No smell, the mouse repellent is made of fireproof material and certified by RoHS, which is 100% safe for your family and pets. WIDE EFFECTIVE COVERAGE: The rat repellent is effective in an indoor area up to 1600 sq. ft. We recommend you to install one unit per room for the fastest and best result. HIGH PRICE RATIO: Save money and time. Pest repellent only costs 0.144 Kwh for 24 hours so its better to plug mosquito repellent in wholeday for all-round protection. Enjoy the pest-free house and free from cleaning up the dead bugs. 60 DAYS PRODUCT WARRANTY: We offer a 60 days guarantee from the date of purchase. Normally, pest control costs 3~4 weeks for a distinct result. If there is no content result after 3 weeks, we will issue you a full refund.