Solar Power: To keep our environment clean, we pioneered the use of eco-friendly solar power and rechargeable batteries in our ultrasonic solar insect repellers. It absorbs sunlight for daily functions. Additionally, it must be used continuously for 7-14 days before terrestrial rodents begin to leave the area. Eco-friendly and safe: Sonic rat repeller emits sound pulses and ultrasonic waves without using any harmful or toxic chemicals. This solar-powered mouse repeller only works based on low-frequency sound vibrations, is safe for children, pets and people, and will not pollute your garden and agricultural plants and crops. Wide coverage, ultrasonic vibration: When the pet enters the area, the infrared sensor will be triggered. The infrared sensor has a left-right angle of 110 degrees and an effective distance of 6-8 meters, depending on the size of the animal. For best results, we recommend 2 units per 80 feet. Waterproof and Durable Design: Made of durable ABS and aluminum material, corrosion-resistant, safe and chemical-free, IP65 waterproof and rainproof. No radiation, chemicals or odors, safe for humans and pets. The green casing can be used easily or as garden decoration.