Electromagnetismsends electromagnetic pulses through the wiring in your homes walls to create a hostile environment that causes pests to pack up and leave. The devices intermittently emittedultrasonic wavesmake life unbearable for pests, so they flee the area where the ultrasonic waves work. ENVIRONMENTALLY FRIENDLY A product for home use that works 24 hours a day, 365 days a year, WITHOUT dangerous chemicals that are toxic, poisonous or emit unpleasant odors. SAFE FOR CHILDREN AND PETS It is completely safe for children and pets and also does not affect any of your household electronic devices. SAY NO TO HARMFUL PEST CONTROL Exposure to pesticides used in traditional pest control can have serious health and environmental impacts. Specifications Material: ABS Color: White Light color: Blue Plug type: US, EU, UK, AU Product size: L*W*H: 9*5.6*3.5cm Product weight: 67.5g Power: 5W Scope of delivery: Oveallgo Ultrasonic Pest Repeller, plug it into the socket for indoor pest control.Pest repellent against mice, insects, cockroaches, spiders, rodents and mosquitoes*1/3/5 pieces Package Includes: 1 x Oveallgo Ultrasonic Pest Repeller