While they are currently more interested in me (unusual, as I don’t have food), they love this thing. It’s hilarious. They went bananas for it the moment it arrived (the catnip that came with it helped). They climb in and around it, scratch the hell out of it and love to dive bomb each other from the top. It would probably be a tiny bit better on carpet, as , when they bomb from the top rope, it rocks and sounds like a basketball falling to the ground