It’s horribly wobbly! My cat climbs real trees and other cat trees in our home and won’t use this!!!  Also, because the bottom carpet was so poorly stapled, it scratched my wood floor! It’s no good as a free standing tower. I would have to anchor it to a wall somehow in order to keep it and I’m not about to damage a wall. I tried it on carpet and padding to no avail. I’m NOT looking forward to dismantling this and returning it. Oh, even though it was easy enough to assemble, the directions weren’t even in English!