Ultrasonic Attack Wave Pestrepeller is effective in controlling mice, rats, roaches, fleas, crickets, ants and most of the other common pests. The Pestrepeller attacks the auditory and nervous systems of most common pests causing them pain and discomfort. The Pestrepeller will not interfere with televisions, radios, electronic burglar alarms, fire or smoke detectors, pacemakers, hearing aids or other electronic equipment. The Ultrasonic Attack Wave Pestrepeller strikes the auditory and nervous systems of the pests strongly with its intensive ultrasonic waves.