We adopted a 7 year old cat and needed to keep him indoors for awhile.  This box is well structured, sturdy and I don't have any odor any longer.  The cat has his privacy and if he could talk I would ask him.  Cats are very private about their habits.  I highly recommend this product.

Pros: Great value and easy to put together
Cons: Try to find a litter box that is not too high as the opening is pretty low and if the litter box is too deep you can see it sticking out.