Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pieces don't stay together

I bought three of these and all of them fell apart within a week. The wood split on some as well. I bought 4Lixit Guinea Pig Igloo Small Pet Homeand have 4Lixit Critter Space Podand these work great instead. If you are looking for something natural and not plastic maybe you can figure out a way to keep these together. The wood is the only positive thing I can think of about them, although I believe they are made of pine which seems weird because we are not supposed to use pine or cedar bedding for our rats so why pine homes? I know a rat breeder who loves these and that's why I got them, but I was not happy with them at all.