Solar Energy Built-in high-tech solar panel, can be charged directly with solar energy, does not require additional batteries, saves a lot of energy, practical and environmentally friendly. That only takes 5 hours to charge in the sun.Efficient and Safe The Solar Mole Repeller vibrates and produces approximately sound waves. The ultrasonic solar repeller is effective against rodents such as cockroaches, rats, mice, snakes and other pests, stimulating the central nervous system of mice by vibrating and emitting sound waves of 400 to 1000 Hz. It is very efficient in eliminating mole and Mouse, can repel moles, snakes, rodents and other destructive rodents.Harmless to people and pets The mole deterrent sends out pulses for 2 seconds every 30 seconds, which generate vibrations and sound waves, drive away moles, deter animals such as mice, moles, voles and gophers, without using chemicals that damage the soil. The mole repellent is not harmful to people and pets. Vole stop repels voles.Wide Range of Action The solar mole repellent is powerful and effective, the device works in a circular pattern, with a range of about 15 meters and covers up to 650 square meters. We recommend you install 2 or 4 devices every 100 meters in the garden or patio for best results.