A humane and safe way to moles, gophers, groundhogs, voles and other burrowing rodents, they are chased away unharmed. No chemicals or.SolarPowered Mole Deterrent: This Mole chaser spike are by its solar panel. 4hour solar charge lasts for 5 days working, no need to replace battery.Extensive Coverage: Operates in a circular pattern, approximately 40 ft. in diameter. So it is recommended to use 12 solar mole repeller units per acre.Weatherproof Solar Mole Chaser Spikes: pulses emitted 3s pulses for every 30s, it penetrates the soil for and forces to evacuate the area covered by the sound.In general, it need about 24 weeks to drive the Mole away from your garden, Then your garden be free of these nuisance critters after some weeksColor: greenMaterial: plasticPackage Contents:8 x Solar Powered rodent repellentOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is + 13cm.