The ScoopFree classic self cleaning litter box is a life saver! My two cats took to the new box right away. The crystal litter is excellent because there is hardly any dust compared to the clay litter. We only have to clean out the box every two weeks now compared to before we were cleaning our old litter box out everyday. It is so much easier now we can just toss the box out and put down a new one. The only thing I’m not a fan of is having to buy replacement boxes that can become quite costly, it would be better if it had a reusable pan. Overall I would definitely recommend this self cleaning litter box!