Effective Rodent Exterminator: Use quartz oscillations and vibrations to keep moles, voles, ants and snakes away from the property. Loop Sound - Quartz oscillations between 400 and 1000 Hz are transmitted at intervals to minimize habituation effects. The multi-frequency devices thus guarantee a permanent movement High Range - The super powerful vibration motor allows an effective range of up to 1250 square meters. Therefore, the dispenser is ideal for gardens or fields Animal-friendly - the repellent works without poisons or live traps. Other farm animals or people are not disturbed. Soil and plants are protected EASY TO USE: The anodized aluminum rod has an on/off switch. Quickly replace the battery without removing the device from the ground. Battery life : 6 months (battery not included)