Use a 100% kid safe, humane approach to prevent your property from moles voles shrews gophers and destructive ground rodents. Rest easy knowing your entire lawn is protected even in rain, the mole vole repellent unit is waterproof & corrosion-proof. For optimal performance we recommend that during installation of the yard mole repellents be placed on every 96 feet on your lawn. Moles and gophers and other burrowing rodents are chased away unharmed. Mole repellers emitted 3-4s sonic pulses for every 30 seconds, it penetrates the soil and also forces pests to evacuate the area through which the sound is travelling. After which your garden will be free from rodents. In general, it need about 2-4 weeks to drive the Mole & Gopher away from your garden, Then your garden will be free of these nuisance critters after some weeks. Not effect people, animals or pets. Moles, gophers and other burrowing rodents and chased away rather than harmed in the process. Solar Sonic Spikes repel moles, chipmunk and gophers. Our state-of-the-art solar-powered ultrasonic waves repellent system effectively prevents pests from damaging your land and coming into your lawn, yard, farm or garden. They are a preventive method that also doesn’t harm the environment. Solar panel - 2V/70mAh monocrystalline silicon. Battery - 1.2V/600mAh Ni-MH battery. Frequency - 400HZ +/- 50HZ Material - ABS plastic. Switch - ON/OFF switch. To use, make a pilot hole in the ground with a wooden or steel rod. Next, insert the Spike into the soil so that the cap is flush with the ground to avoid tripping hazards and the chance of hitting it with a lawnmower, press the ON/OFF button, then it works for every day. When placed in the ground and activated, sonic pulses penetrate the soil every 30 seconds, emitting a sound which is highly irritating to moles and gophers, mice, voles, snake and other rodents. Keep your garden, yard or farm in order! Our upgrade repellers - 4pcs, these are hardware with a sensor giving vibrating a pulse working as a remover pest. power rattle sonar molechaser vibrasonic goffer products oil scram windmill electric castor rattlesnake chase granules granular copperhead electronic stakes devices ultra operated patrol noise best pulse mouse greenwood set chasers gofer