Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for Wall Hanging

I bought this to hang a laminated world map in my child's room. Despite using plenty of it, it fell off the wall in less than a month, and the putty is not sticky at all anymore. We have a slightly textured wall, but it seems like museum-grade putty should be able to adhere to it. And it's not clear why after a month...it's not sticky anymore. Perhaps it works for objects stuck to a flat horizontal surface, but it didn't on our wall.