Rid the yard of pesky burrowing creatures with these convenient ultrasonic mole spikes. These sets send a sonic pulse into the ground which frightens creatures like moles, gophers, voles, and groundhogs. These sturdy stakes are made from durable Abs and feature a IP65 waterproof rating for lasting strength and durability. Each stake features a built-in solar panel and battery. The panel converts solar energy into electricity and it is stored within the the battery. For the best results, place each spike in an area that receives up to 8 hours of direct sunlight. Installing these solar-powered garden pest control spikes is simple. Use a wooden stake and mallet to make a pilot hole in the ground. Drive the spike into the ground until it is 1" above the ground and press the button to activate the device. Be sure to remove the spike before mowing the lawn. This mole deterrent for yard can be used and reused multiple times and functions off ultrasonic solar energy..