Ultrasonic Waves: This rodent repellent uses ultrasonic vibrations to repel rodents by emitting low-frequency sound pulses every 30 seconds. This mole repellent trap uses hearing sensitivity to repel burrowing animals like moles, voles, snakes, rats, and more. Massive Coverage: Each mole trap has an effective coverage of up to 7000 square feet, so it is recommended to use multiple mole repellents to increase the protected area. Generally, a solar mole repellent needs about 2 weeks to help your garden get rid of these pests. Solar Powered Device: Each item in the 4-pack solar ultrasonic mole repellent is made with a solar cell that can capture sunlight and convert it into energy for 3 to 5 days. With these mole traps, you don't need to use extra batteries or change batteries between uses. ABS Plastic Cover: This mole and vole repellent can withstand all weather conditions thanks to the waterproof ABS plastic housing. You don't have to worry about this item being ruined or damaged by