I received this product from 3M to review and I was very interested in this product because I was curious on how it would stick on windows since usually Command hooks are used in walls. Placed it on the window outside of the office since that's where my mom's herb garden is located and hung a small gardening shovel from the dollar store. It's still up to this very day, withstanding the bipolar weather. It gets very humid here but so far so good. I'm just not too fond on the design because kind of hollow so debris from the wind or rain water collects and dirties part of the mini shovel's handle. My mom seems to like it too so far!