This is a great product, a little pricey but it works great.  I mainly purchased because I was given a gift card for Christmas, not sure I would spend this much money on a litter box without the gift card.  This litter box is nice and big, our cats are bigger.  One of our cats weighs 17 lbs and he is quite long.  A soon as we set up this box both of our cats went right in it.  It is for sure helping with our girl who needed the higher walls.  It is reducing (somewhat) the litter scatter.  Our boy likes to play in the litter box.  This is a really good product and I highly recommend.  I am considering purchasing another one.