【Dog, Cat & Wildlife Deterrent】Powerful ultrasonic sound combined with PIR motion sensor, humanely repels unwanted wildlife, dogs, cats, foxes, rodents, squirrels and some insects. 【PIR Infrared Sensor】Our ultrasonic cat repellent is equipped with a PIR sensor. An infrared sensor that emits signals continuously. When it detects that a moving animal is within the detection range, it automatically emits a sound wave frequency to drive the animal away. 【Solar Charging & IP44 Waterproof】A solar panel is placed above the mouse repeller which can be charged by solar energy in the sun, Efficiently charged to maintain a long standby time all day. Its waterproof rating reaches IPX44, can work effectively all year round in almost all weather conditions. 【Eco-Friendly and Versatile】The powerful outdoor cat repellents do not contain any chemicals or pesticides, safe for humans and pets. Ideal for driving away cats, dogs, rodents and all other unwanted animals. Ultrasonic animal repellent ideal