Usage Tips:About this product [ultrasonic strong flash repellent] can set 5 different sensitivity modes according to needs, different sensitivity can effectively act on different animals, and the level can be set to adapt to the range area, powerful ultrasonic signal to scare cats and dogs , keep wild boars, mice, birds and many other animals away from your area, house, garden or yard. Charging IndicatorTwo charging methods are provided. Designed with a solar panel and charging indicator light, and comes with rechargeable batteries (4 AA rechargeable batteries not included), or can be charged with the included USB cable. Please charge the device before use. WeatherproofGreat for garden, patio, farm. Water-resistant to IP-4, the sturdy hard plastic construction repels rain, snow, ice, and wind, so you can use them on the job in any weather. (Reminder: Do not touch the charging interface when working). Humanized DesignThe solar dog repellent is only used to drive animals out of the garden, no chemicals are used. No chemical ingredients harmful to human health, Passive Infrared Sensor (PIR) detects motion and triggers, then ultrasonic speaker emits sound to scare away common outdoor animals. Easy to Install and UseWide Effective RangeIt can be installed on the ground with the provided spikes, or hung on objects such as trees, fences and walls to ensure the best effect (direct sunlight is recommended). Very effective at deterring cats, raccoons, dogs and more. This deterrent has a 110-degree angle and an effective distance range of approximately 30 feet, depending on the size of the animal.