I love my Home Zone Security Solar Deck Lights.  They are practical and easy to use.  Just put them in the sun and you've got light at night.  Initially, I was a little confused with the on/off button on the bottom of the lights.  I was expecting an on/off click of the button to let you know if it was on or not.  I just pushed the button a couple of times and hope they would turn on when it got dark.  I was right and didn't have to do anything else before I screwed them down on my steps.