Working Principle: This outdoor cat repellent device uses ultrasonic with flashing intensity to repel birds, mice, cats, boars and other animals, because strong ultrasonic signals may make an animal uncomfortable, but this type ultrasound is almost inaudible to humans, so you can achieve the goal of chasing animals away and letting them leave your mansion and garden. Removes alarm function: This TLICLXY cat repellent removes the alarm function, reducing the impact of noise on humans and not disturbing neighbors, no messy chemicals or pesticides, no traps, no dead animals. In addition, because the frequency range of the emitted ultrasonic waves is different, the emitted ultrasonic waves have no effect on pregnant women, children, friendly to humans and the environment. Solar charging + USB charging: Our garden cat repellent has a solar panel, which can be easily charged, can be continuously charged by sunlight enough to meet daily consumption. If it's raining outside, you can use USB charging. indoor cat repellent is especially suitable for use in places where it is not practical to supply power, such as farms, gardens, lawns, kindergartens. 5-speed adjustable frequency: There are 5 different frequency choices. You can choose it according to your needs Level 1: Mouse, dog, rabbit, fox, mink, etc. Level 2: cats, raccoons, badgers, skunks, etc. Level 3: bats, birds, mice, etc. Level 4: Loud flashing LED, sound and light alarm: snake, raccoon, boar, mink, etc. Flashing LED. Waterproof: The ultrasonic cat repellent with a waterproof design that can work on rainy days. Note: Do not submerge in water. You can simply push the ultrasonic animal cat repellent into the ground. Perfect companion for yard, patio, driveways, garages, attics, porches, boats, gardens, farms, ponds, etc.