4Pcs Solar Powered Gopher Repellent Ultrasonic Deterrent Spikes For Lawn Garden (L2.3 x W2.3 x H9.7)inch - Square Features: Watertight plastic housing and corrosion-proof spike make it more durable Extensive coverage radiates in all directions Provide you with a more humane and safer way to repel harmful rodents (moles, snakes) effectively without affecting families and pets Solar-powered, green power, clean, pollution-free, and inexhaustible 8 hours full charge for 5 days of continuous working IP44 water water-resistant, and can work normally on rainy days, but please don't expose it to heavy rain Perfectly designed for outdoor pest control like repelling moles, voles, mice, rats, snakes, and gophers in patio, lawn and garden Insert the stakes into the soil, and make sure the solar panel plate is about 4 inches above the ground to avoid water flowing into the interior We recommend an installation of the yard mole repellents every 45 feet throughout your lawn for optimal performanc