A device and a method are provided for repelling animals, namely vermin. The device is electrically powered and includes a sound emitter and a circuit operatively connected to the sound emitter to cause the sound emitter to produce an ultrasonic sound to discourage the vermin from at least one of entering and remaining within a vicinity of the device. The ultrasonic sound has a frequency in the range of approximately 21.5 kHz to 30 kHz. The sound can be cycled on and off to reduce the chance of vermin becoming accustomed to the sound.