Safe and Effective: The cat repellent emits ultrasonic waves to stop pets from barking, and it is safe for the human body; the machines ultrasonic signals will keep dogs, cats, birds and other animals away from your area, helping you more effectively prevent dogs from barking and not disturbing your work. Wide Control Range: The cat repellent working frequency is 25-61kHZ, working range is 6-8 meters. When you place the product in the area where you need to prevent small animals from entering, it can effectively drive off the invading small animals. It is a better tool to help you get a quiet environment. Easy to Install and Energy-Saving: Cat repellent can be mounted in-ground with the provided spike or hung on the wall through the back slot (With direct sunshine recommended) . Cat deterrent is powered by solar energy, with high efficiency and low power consumption. Go Green and Eco Pet-Friendly: How to keep cats out of your yard with the cat repellent outdoor - no traps, no dead animals device. The ultrasonic dog repellent for lawn and outdoor cat deterrent devices is free from substances threatening humans and nature The sound waves it produces have high frequencies than the naturally audible ones in human ears, thus, making them harmless to humans Because it's solar-powered, it gets its power source from the sun. Easy to Use and Maintain: When you turn on the power of the product, cat repellent will emit ultrasound, which can only be heard by pets such as dogs and birds. At the same time, the LED lights will light up, and the deterrent power of the product is working and easy to use. This cat repellent can work effectively in complex and harsh environments and works fine even on rainy days (Be careful not to soak in water).in 24 hours.