My cat doesn't use it, but she is 11 and I got it around the same time that we moved, so she is probably just a scared of the environment, not the product. It is also summer, and my cat will probably use the product more when she gets cold, since it is very insulated.

I had read other reviews, and it is a little unstable due to a small base. For the moment, I have pushed it into a corner, where I have a wall on one side, and a piece of furniture stabilizing it on the other side. It wobbles a lot less now, but I am thinking about installing brackets to make this just a little safer for my kitty. 

It was SO EASY to put together, I was astonished. It is a great piece and a great deal. I hope my cat starts using it soon.