Solar Powered Mole Repeller with LED (Pack of 4) Very Safe ~ No Poisons, Chemicals, or Traps, that may harm Children or Pets Four (4) Solar Powered Ultrasonic Mole Gopher Rodent Chaser Repeller Built-In Rechargeable Battery (included) ~ 1.2v, 800mAh Ni-cd Made of Durable ABS plastic and non-corrosive Aluminum Effective Coverage Area ~ 650 Square Meters / 7,000 Square Feet