Sonic Mole Repellent Stakes: Drive moles, gophers, groundhogs, voles and other burrowing rodents away from lawns by emit a sonic vibration sound pulse zaqaqa, they are chased away unharmed.Economical Solar-Powered Design: This Haesel stakes come with rechargeable battery included, charging by its polysilicon solar automatically, 4-hour solar charge lasts for 5 days working, no need to replace battery.Sonic mole deterrent - humane way to repel moles from tunnelling and causing damage to lawns, vegetable plots and flowers and seedling plant roots.Scope of Application: A must-have device to protect your back yard, farm, garden, lawns, seedbeds and seedling plants from rodents damage.No chemicals or poison is used in this process. Moles, gophers and other burrowing rodents and chased away rather than harmed in the process!