Sportsrain Multifunction Electronic Ultrasonic Insect Repellent -Sound Waves Insecticide Safe Non Toxic Flat Angle Plug, White Chase away rodents, roaches, mosquitoes and insects that find holes and crevices in walls and furniture in your home to live and breed in. Make way for innovative ultrasonic technology! Using sound waves that humans cannot detect, but that pests and rodents can, this pest repellent keeps them away. US Regulations certified, safe and easy to use. No toxic chemicals or hazardous smoke and sprays. Flat Angle plug-In Electronic Device that is lightweight and portable. It plugs in anywhere and you can forget about pests! Ideal for use at home, outdoor or camping trip, or when travelling to countries with high incidence of mosquitoes.