[Effective Rodent Repellent] Our under-hood rodent repeller effectively prevents rodents from entering your car, chewing through wires, or making nests. The combined action of ultrasonic waves, sirens, and LED strobe lights will drive them away, protecting your car from their intrusions[Reliable and Hassle-Free] This rodent repellent for car engines operates at frequencies of 9k-65kHz, ensuring no noise disturbs your family. It automatically turns on/off based on your needs, whether in the car or at home. At home, you can choose to turn off the LED strobe light for a more peaceful environment[Multiple Charging Modes] The rodent repeller can be installed in three ways: 1. using 4 AA batteries, 2. connecting to the vehicle's battery via a DC cable, or 3. utilizing a USB cable. It's easy to attach the repeller to the inside of the car hood with the included zip ties and turn it on. Made from high-quality materials, this repeller is built to last and provide long-term protection for your vehicle[Persistent Protection Promise] Initially, heightened activity might be observed, signifying the pests' irritation. However, with consistent usage, over a span of a month, you'll witness a significant reduction in the presence of squirrels, mice, and rats. For unwavering defense, ensure the mouse block remains plugged in continuously[360 Wide Coverage] The mouse deterrent covers up to 300 square feet, ensuring protection for the entire vehicle. It effectively repels a wide range of animals, including mice, rats, and squirrels. Designed specifically for vehicles, it can also be used in various locations such as garages, barns, attics, and other areas for added versatility