They need to include instructions in the case. I, till this day, was unable to figure out how/where to put the ladder from level 2 to level 3. It's just not long enough. Everything else went on as expected aside from that part! My cats don't use it as much as I hoped but the do scratch it a lot so I am partially happy. I just don't understand what's the big deal with creating a clearer instructions sheet. It should take 30 minutes more and than they would have more happy customers. By the wat=y, if any of the staff reads this, feel free to conract me we detailed instructions.