The Molechaser® is the easiest and most environmentally friendly way to get rid of moles, voles, gophers, shrews, and other burrowing rodents. Made of sturdy high impact materials, the Molechaser® is weather proof and proven effective.Penetrating sonic pulses of 300 Hz at 15 second intervals irritate burrowing rodents and motivates them to move to a more comfortable home. The unit can be buried flush with your lawn, allowing easy mowing without detracting from the look of your landscape.The Molechaser®â¬"s battery cylinder allows you to change the batteries while the unit remains in the ground. With a battery life of 4 to 6 months and a lifetime warranty, the Molechaser® is very cost effective, convenient and reliable.