EBC variable frequency solar powered snake repellers are designed to our specifications. They help create a safe environment within their protection zone and are designed to greatly reduce the risk of confrontations with snakes, This helps to create safe areas for you, your family and your pets to enjoy. The solar powered repellers emit dual variable frequency vibrations that mimic those made by heavy-footed animals. As well as a flashing LED visible through the translucent top cover, the sound of the ultra-sonic buzzer also alerts you that they are operating.