[Unbeatable Results] This mole repellent stakes is based on the principle of an ideal deterrent frequency for moles, voles etc. Sonic pulses and vibrations highly irritable to these underground rodents are sent out every 20-40 seconds to keep them away from the covered area.[Easy to Install] This gopher repellent animal stopper is simple to use. Just insert it into ground soil and leave the solar mole repellent panel at least 2 inches above grade. Then, turn on the power button and watch this mole repellent stakes do its thing. Also good as a snake repellent outdoors to keep pets safe.[Solar Powered Ultrasonic] This outdoor vole repellent emits ultrasonic sound pulses and vibrations at 400 - 1000 Hz every 20 -40 seconds. This upgraded mole chaser spike contains solar panels for longer working hours. Solar energy intake during the day enables functionality at night.[High Quality Product] Waterproof design enables use on rainy days. This mole remover and outdoor ultrasonic rodent repellent suits lawns, gardens, yards and farms. The effective range is around 300 square yards for this groundhog repellent spike.[Maintenance and Worry Free] This gopher repeller and mole repellent stakes is the ultimate worry free solution. No plug in or any power source required. Be mindful that the solar mole repellent must be used continuously for many days to weeks before effects can be noticed.