【Ultrasound + Strong LED Flashing + Sound Alarm】There are strong LED lights in the eyes of the owl. As for his mouth, it is an ultrasound emitter. When the outdoor repeller detects movement and body heat, it emits a mixture of various ultrasonic waves, strong flashing lights and audible alarm to scare animals away. There is no danger to humans or animals. 【Expulsion Without Injury】The ultrasonic repeller scares away cats, squirrels, birds, rats, hamsters, rabbits, deer and other unwanted strays. It helps you protect your garden, vegetable yard, farm, orchard, etc. It’s lightweight and easy to set up in the ground or hung on the wall, perfect for taking it camping to get away from wild animals. There is to choose for different ultrasound frequencies according to your needs. Check the mode of exploitation for more info. 【Waterproof】This cat repellent is waterproof. It is able to withstand normal rain. Note: If there are thunderstorms or very bad weather, it is recommended to bring it