Sonic Mole Repellent (AN-A312)

Use against moles, voles&other burrowing animals.
Emitting low frequency sound, which vibrates the ground in a circular pattern.
The vibration will be blocked by solid objects, such as building foundations.
Cover extends in a circle from the unit.
Covers up to 625 square meter.
Superior aluminum casing with durable plastic head & top.
Power supplied by 4*D cell or 2*D cell(1.5V) batteries, up to 4-6 months working.

*Batter slot included, you can easily change the batteries without pull the Whole product out of the ground, it's more convenient.