ARAD Solar Powered Mole Repeller Gopher Chaser (3-Pack) Covers a 6,000 square foot area Keep moles, gophers, voles, badgers, mice, ferrets and mongoose away from your lawn, gardens and yards forever Rechargeable Battery: Ni-CD / Ni-MH, can recharge more than 600 times. Chemical free, safe to human and pets. During the day, it runs on the sun. At night, it's powered by an internal rechargeable NiCad solar charged battery for 24-hour-a-day protection