ABS shell material, so you can protect your garden even when it rains. You can wash it with water or rain directly. If you are tired of animals ruining your yard or garden, you will love these solar powered animal removal devices. They are excellent for repelling rabbits, groundhogs, gophers, voles, snakes, listed squirrels, raccoons, squirrels and more. In areas where gophers, snakes or other digging rats are infested, insert the ultrasonic gopher repeller spikes into the ground and turn on the switch. Enjoy a beautiful, pest-free garden with these solar powered sonic pest repellers. Plug and play, no tools are required to install. NOTE: Charge the ultrasonic solar repeller in the sun for at least 2 days before installation. Solar gopher spikes equipped with solar panels, can absorb sunlight, work longer, save energy and save electricity. Ultrasonic solar rodent repeller should be selected for use an installation site that can be directly exposed to the sun's rays. Keep the solar panel clean because a dirty panel will reduce the sunlight available to charge the battery. Recommend installing repellents every 50 feet on the lawn for optimal performance.