Weatherproof and eco-friendly with its ABS plastic construction, our Gardeon Snake Repeller keeps out not only snakes but also other garden pests such as moles, rats and mice safely and humanely. It does so by emitting a sonic pulse and vibration through the ground to deter their presence. While each snake repeller has an effective range of up to 40m in diameter, you can extend that coverage through the use of multiple repellers to provide a formidable barrier. They are also portable to bring along to camping trips for peace of mind. Suitable for your garden, yard, farm and orchard, the snake repeller works 24/7 and up to six months with good quality batteries (not included).