Description:The mole repeller vibrate and make sound waves about 400 to 1000 hertz through the buzzer; it can ward off moles; gophers; voles; dandruff and other destructive rodents.SOLAR ENERGY:Equipped with the solar panels and rechargeable batteries; capable to absorb sunshine and come with longer working time; no need to replace battery.SUITABLE FOR MULTIPLE PLACE:Apply to your garden; farm; paddy field; it can ward off moles; gophers; voles; dandruff and other destructive rodents.EXCELLENT WATERPROOF PROPERTY:The product has the characteristics of rainproof and waterproof; and can work continuously even on rainy days. But it can't be soaked in water for a long time.