I am very happy with my scoopfree classic self cleaning litter box. I have 3 cats and this litter box is a life saver! It really does keep the odor to a minimum and no more scooping litter. It was easy to assemble and set up. My cats just hopped right in and did their business. A lot less tracking of litter onto my floors. It is so much easier to change the litter trays in this thing than a traditional litter box.