Efficiency Animal Repeller: you will receive 4 outdoor ultrasonic repellers, enough to meet your daily needs and replacement needs the ultrasonic repeller is powered by solar energy, ideal for outdoor and indoor use, making it safe and effective in protecting your plants, fruit trees, crops, flowers, and property Effective Nighttime Protection: equipped with a solar panel, the solar ultrasonic animal repellent absorbs sunlight quickly and converts it into energy, that gets fully charged by solar energy during the day and automatically senses the change of light and commences operation at dusk and night, The lights automatically switch off after dawn to conserve energy The device is designed to work for a long time without battery replacement Easy to Use: Our coyote repellent adopts a distinctive suspended design and is easy to set up and use. Just press the power button to activate the predator deterrent and hang it on a tree, trunk, stake, wall, or fence at a height ranging from 1 to