These won't hold up in humid conditions. I've had 3 of these fall off of walls in various rooms in my house over the past couple weeks. Luckily, nothing has broken so far. It's been a rainy spring in Texas and I think the humidity is the reason. The items I have hanging on these are very lightweight, definitely less than the 1/2-lb limit. In some cases, the adhesive stays attached the wall and the hook falls off. In others, the hook fell off and took the adhesive with it, as well as some of my paint!