Features: Solar sonic mole repeller vibrates and emits low frequency 400HZ sound pulses every 30 seconds to repel burrowing rodents. Vibrations and sound impulses are harmless to humans, pets and the environment. Effective, safe and humane rodent repellent. The vibrations and pulses of sound penetrate the ground to create an unbearable environment for underground burrowing rodents to stay and cause them to leave the property and seek other places to live. Extensive Coverage: Solar-powered sonic pest repeller radiates in all directions. It is recommended to use multiple devices to overlap, providing even more coverage. It usually takes 2-4 weeks for moles, gophers, voles and other burrowing rodents to leave the area. Efficient solar charging. The solar mole repeller is charged by a polysilicon solar panel to accumulate power for operation in dark hours. An 8-hour solar charge lasts 6 days, effectively and continuously preventing rodents from returning. Constructed with waterproof and