SereneLife Electronic Plug in Pest Repeller - 2018 Upgraded High Frequency Ultrasonic Sound Eco Humane Home Indoor Mice Rat and Rodent Repellent Control Works w/Fleas, Rats, Bug, Cockroach PSLUMR5 ULTRASONIC FREQUENCY: The SereneLife Electronic Pest Control delivers 25 to 65 kHz ultrasonic wave that emits high frequency sound to effectively repel rats and other rodents. It also works with cockroach, spider, bed bugs, and fleas ECO-FRIENDLY: The mice trap offers you an eco friendly and humane way of eliminating pests inside your house without the need for harmful toxic chemicals. Safe, non-poisonous, and reliable. Place it in areas that rats and other pests usually appear PLUG-IN OPERATION: Just simply plug it into a wall socket about 1-1.5m above the floor. Switch between variable and fixed modes. It will then emit ultrasonic waves to repel pests. Use continuously for 12-15 days for desired results LED INDICATOR LIGHT: The electric rodent repeller is equipped with built-in LED indicator lights which notifies you that the device is working. The red LED light will be activated when switched to variable mode and green light when in fixed mode 500 SQ FT COVERAGE: This pest eliminator device has a coverage area of up to 500+ square feet ensuring your home and familys protection from unwanted pests and diseases it may bring. Features a compact design w/ engineered ABS housing construction