Efficient Solar Powered Rodent Repeller --- For Optimal Performance, We Recommend Placing A Rodent Deterrent Every 96 Feet Of Your Lawn When Setting Up Your Garden. It Emits A 3-4 Second Sound Pulse Every 40 Seconds, Which Penetrates The Ground And Flushes The Pest Away From The Area Where The Sound Is Transmitted.Safe To Use --- Humane And Safe Around Pets And Children Mole Studs Ward Off Moles By Emitting A Sound Pulse. They Do Not Harm Any Animal In Any Way As They Contain No Chemicals, Poisons Or Hazardous Ingredients.Effective And Wide Coverage --- Ultrasonic Pest Repeller Emits Low Frequency Pulses For 3-4 Seconds Every 20 Seconds, Which Penetrate The Ground And Prevent Moles From Entering Protected Areas, As Moles Are Sensitive To Noise And Vibration And This Is An Effective Method Of Preventing Them From Damaging Outdoor Areas Such As Patios. Lawns, Yards And Gardens. Solar Powered - Economical And Safe --- Built-In High Quality Polycrystalline Silicon Solar Panel, The Solar Mole Repeller Repels Mosquitoes And Works Continuously For Up To 400 Hours On One Charge Complete, Just Plug In The Solar Mole Repeller In A Sunny Spot In Your Garden, Flip The Switch And It Will Protect Your Garden From Pests. Infestations Without Having To Change Batteries.Easy To Install --- No Wiring Or External Power Required. Just Plant The Solar Powered Rodent Repellents In The Ground And Press The Button And They Start Working Immediately. Excellent Waterproof And Rainproof Design, So It Works Even In The Rain.