- Vibrasonic Molechaser - Patented motor drive generates powerful vibrations that are irritating to burrowing rodents and harmless to pets and humans - Intermittent emissions minimize the chance taht rodents will become immune - Crafted from a single billet of aluminum to ensure lifetime performance - Watertight cap - Insert flush to the ground - Battery cylinder allows you to change the batteries without removing the unit from the ground - Powered by 4 D alkaline batteries - Battery Life: 4-6 months - Frequency: multi-modal - Duty Cycle: 18 seconds - Coverage: 13 500 square feet (1/3 of an acre) - US Patent Number: 6134827