CHEMICAL-FREE: The repeller is safe for use around pets and children. Step 2 - Press ON button. When you hear a "buzz", indicating that the Solar repeller is running. BUZZER VIBRATION TO WARD OFF:The mole repeller vibrate and make sound waves about 400 to 1000 hertz through the buzzer,it can ward off moles, gophers, voles, dandruff and other destructive rodents.
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