Effective and Safe: The best cat repellents can effectively repel common animals(birds, foxes, dogs, squirrels, rodents, etc.), through using high-frequency soundwaves to irritate, forcing them to look for other comfortable areas. And it's a safe and humane way to stop cats using your garden as a toilet. Ultrasound and PIR Sensor: When unwanted animals enter the PIR sensor range, the sound waves and bright red light activate. The ultrasonic wave by changing frequency constantly deters unwelcome wild animals, keeping them from messing in your garden. Convenient and Battery Powered: Compared with solar energy, batteries can be more convenient. It can work well in virtually all weather conditions. Not just on sunny days. After setting up, you can leave them working outdoor without worrying about it. Batteries are not supplied. Wide Detection Range: The passive infrafed sensor has an angle of up to 110 degrees, a detection range of up to 8 meters to detect. Its large detection area range is good to get rid of wild animals away from your garden, yard, field, farm. Easy to Use: The cat deterrent is easy to install by pluging in the earth using the stake supplied, or it can be screwed to a wall or fence. Light weight and simple design makes it easy to move. In addition, please ensure placing the fox deterrent where it can't miss the annoying animals. Adjustable Sensitivity: This bird scarer's sensitivity can be adjusted from weak to strong. For the best result, set the dial to the maximum when it works is suggested. Battery Operated: Requires three AA batteries.(Batteries are not included. ) Batteries life depend on the number of times the device is activated. Generally, they last for 3-4 months. And the repeller can be widely used in all outdoor environments, such as gardens, yards, terraces, garages, driveways, farms, ponds but also attics, e