Instruct: Classify Amazon reviews into positive or negative sentiment
Query: TERRIBLE-- Thin, cheap and does not stick to wall

I bought two 4-packs of these at Walmart to line a wall. By the following morning, ALL BUT ONE panel was ON THE GROUND. The adhesive tabs that come in these packages do stick to the wall, but not the crumbly cork board surface, so you are left with fallen panels (broken or cracked from hitting the ground) and adhesive squares stuck to the walls... and I mean STUCK. If I was going to rehang the cork (which I can't because all but two boards are now broken), I'd use some other type of adhesive to adhere to the wall. Oh, and note that these are quite thin, so you can't use regular push pins or you will go right into the wall. While these were relatively expensive, they are still a complete waste of $$.