I bought this item at the same time as buying other Zhu Pets and Kung Zhu toys for Xmas. Although I am not generally satisfied with the quality of any of it, this is particularly poor. The hamster always gets stuck at the entrance to the lift ramp as it does not fit together properly. It should automatically trigger the lift to rise when it enters, but it always gets stuck at the entrance to the lift, and then again gets stuck inside the lift so that you end up fiddling with it all the time to make it work. One side of the ramp is very steep so the hamster cannot go up it. Hence you can never use this in any configuration where you want the hamster to turn around and go back. It can only lead the hamster to a dead end. I wouldn't recommend wasting your money on this toy.