I hate litter maintenance and was hoping this would eliminate that from my daily routine but it did not.  My cats dig in the litter box so the crystals went all over the floor and the crystals create dust so I don't like that the cats or myself are breathing the dust in.  I was cleaning the crystals and dust from my floor at least 5 times a day.  The rake mechanism works well to push excrements into the hidden area of the box but the crystals will only be good for about 30 urine deposits before you can smell the urine.