These were a reasonable price for so many lights! I purchased them for our back and front yards. Mostly to have some extra lighting in the back when our dog needs to do her business in the night. We do not live in a constant sunny state, so the sunlight I suppose is sparse, especially in the winter. I noticed that they do come on in the evening if we’ve had at least some sunlight in the day, but they do not stay on all night.....they maybe last a few hours at most and then they are completely dark. Wish they would stay on longer for more light.