Needed extra shelves/storage in my shower and this worked perfectly. I've had the shelves up for about 2 months and so far so good. I followed the directions to clean the surface before using the adhesive and the shelves are all located on tile wall inside the shower. My husband has bumped into them a few times but they stay up perfectly, and there have been no signs of rust. The hooks are also a nice bonus for hanging wash cloths, etc.