1.Effective animal deterrent. Powerful ultrasonic waves keep unwanted wildlife away and protect your outdoor garden from disturbance. 2.The strong ultrasonic signals will scare away cats, dogs, birds, foxes, squirrels and other animals from your garden and yard. Contains no chemicals that threaten human health, environmentally safe. 3.Easy Installation. It can be mounted on the ground with the provided nails or screwed to the wall or fence. It is very easy to install and use. It can be placed on farms, gardens, yards, lawns, patios, garages, sheds or anywhere you need safe and effective 24-hour pest control. 4.Wide coverage and adjustable sensitivity The PIR infrared motion sensor has a detection angle of up to 110 degrees and a range of up to 8 meters. Wide detection range of up to 230 square meters. Remove pet feces, food damage, noise and footprints in just a few days. 5.The bird deterrent is powered by 3 AA batteries (batteries not included). It is designed for cloudy weather. It works every day, whether the weather is sunny or not. It is also waterproof so it can work in any weather conditions including rain, snow, ice and wind.