【Ultrasonic Cat Repellent】This animal repellent uses ultrasound with intensity flashes to repel birds, mice, cats, wild boars and other animals, because strong ultrasonic signals can cause discomfort to an animal, but this type of ultrasound is already almost inaudible to humans, so as to achieve the purpose of driving away animals and making them leave your villa and garden. 【Outdoor Cat Repellent】Outdoor cat repellent is waterproof (waterproof rating: IP55), which makes it able to withstand normal rain from all directions. Note: Although the animal repellent is waterproof, it is recommended to bring it indoors during heavy rain or very bad weather to maximize the service life of the product. 【Ultrasonic Protection】Dog repellent only emits ultrasonic waves from 13.5 kHz to 45.5 kHz, which is safe and harmless to the human body. At the same time, it does not contain any chemicals and dangerous products. It is only allowed to drive animals without harming them. The humanized design