I bought two packages of these to hang a small strand of lights (50 mini lights) on my living room wall. I followed the instructions on the package exactly and used 8 of the hooks spaced evenly along the light strand to hang it up. I left my apartment for about an hour or so, and when I returned, every single strip except 2 had fallen off the wall. I thought that I had messed something up, so I re-applied new strips to the back of the hooks that fell and stuck them to the wall again. Twenty minutes later they all fell again!! The package says that these hooks are supposed to hold 1/2 pound, and I know the light strand I used didn't weigh even close to that. I was excited to use these for Christmas decorations, but since they have been so frustrating and don't work, I most definitely will not buy anymore!!