When I first got these lights, I thought they were a bargain.  I was wrong.  The plastic stakes and lights break at the lightest stress.  I broke 2 of the light units just setting them.  The batteries are weak, so you only get about an hour of light before they start to dim down to nothing more than a lightning bug brightness.  Next I found that the batteries die completely after a few months, causing the light to fail altogether. These were a complete waste of money, and unfortunately I did not figure it out until they were past the return date.