I use these a lot to hang lightweight wall hangings at home, in the garage, and at work, and I like the way they work. I haven't had any problems with them.
My husband and I just purchased a new home and we did not want to put any holes in our new walls so we decided to try the command strips to hang items. I was a bit skeptical these would work especially on slightly heavy items, but they work perfectly. I purchased medium and large strips to hang my curtain rods, pictures, and other decor items and they are holding perfectly. No holes, and they come easily leaving my walls still looking new.
These are amazing...they are so easy to use and don't damage your walls in any way... They definitely save a whole lot of time in repairs from nails or other types of wall hangers.