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