Effective protection for cars: The rodent repellent for car engines ... Safety and energy saving: The sound emitted by the rat repeller is between 18,000 - 36,000 Hz, which will not affect humans ...

Designed to be placed under the hood of a car, this rodent-repellent device uses ultrasonic noise and bright LED strobe lights to dissuade critters that might chew through electrical wiring and ...