Ultrasonic Mole Repellent Pack of 4Ultrasonic Defense for a Peaceful Garden Protect your lawn and garden without chemicals using the Ultrasonic Mole Repellent (4 Pack). Designed to emit powerful sonic pulses, these stakes drive away moles, gophers, voles, and other burrowing pests without harming them, keeping your yard safe, clean, and pest free. Each repeller uses low frequency sound waves and vibrations that penetrate the soil, creating an environment that's unbearable for