I purchased my first package of Command Metal Hooks last Christmas. I used them for decorating, and hanging Christmas lights. I also used them on my beautiful fireplace mantle, for Christmas stockings. I removed them after the Holiday, I was really worried about any marks left behind. When I did remove them, I did it slowly like the directions say. No marks left behind, and they also held up the stockings! What a great product! I now use them for hanging everything!