Bird-X TXMOLEX Transonic Mole and Gopher Chaser Weatherproof: Get rid of burrowing critters through thunderstorms, high winds or light showers 24-hour operation: Protect your landscape day or night Maintenance-Free: No messy gels, dangerous poisons, or complicated traps. Solar powered: No batteries. No electricity concerns. No problems! Worry free: Clean, safe, non-toxic and harmless to pets and humans