Sunco solar lights are designed for outdoor gardens, yards, and pathways to provide landscape lighting without underground wiring. The integrated photocell sensor on our wet rated Solar LED will turn on the light when the sun sets and no light is detected.Since the built in battery needs to be charged by the sun in order to light up at night, you will want to place our solar powered LED Path Lights and LED Garden Lights in full sunlight so they can charge for 6-8 hours. The solar lights will then provide 8-10 hours of bright light when it gets dark.To help maintain your solar powered lights, please refrain from placing our path and garden solar lights under trees, shrubs, in the shade of tall walls or inside. Also, please be sure to avoid these low profile lights when mowing your lawn.Sunco’s solar lights also perform best when placed away from streetlights. Otherwise, the streetlight might fool the sensor into thinking that it is daytime and it won’t turn on your light.