Advanced Ultrasonic Pest Control Emits high-frequency sound waves that interfere with the nervous system of common pests. Effective as an ultrasonic pest repeller indoor, rodent repellent ultrasonic plug-in, and ultrasonic mouse repellent for mice, rats, roaches, ants, spiders, and mosquitoes. Easy Plug-In Operation Simply insert the pest repellent ultrasonic plug in device into any standard wall outlet. A built-in light confirms continuous operation, offering a reliable electronic pest repellent ultrasonic solution with no messy setup or maintenance required. Multi-Pest Protection Works as a roach repellent indoor, mouse repellent ultrasonic plug in, rat repellent for house, ultrasonic bat repeller, and even as mice deterrents for home. One versatile solution for insects, rodents, bats, and other unwanted intruders.