My cats love this! It took them over a week to start using it and I was wondering if it should go in the waste of money file. Then a friend's 15 year old came over and redid the design and that was all it took. Meiko sleeps up top every afternoon, watching the world go by outside the window. Toulouse is up and down, in and out , sometime playing, sometimes sleeping. One caution, I do check the fittings every few days and make sure they are staying together tightly. My boys are a good 12 pounds a piece and the structure does loosen up. I would also love to figure out an easy way to clean it. The microfiber attracts cat fur like a magnet!