I got this a month ago, and it has been a godsend. For years my cat has scratched half of the litter out of her box, leaving a huge mess behind everytime. With this self cleaning, no scoop litter box I've had not a si gle problem. Firstly you dont smell anything at all, the Crystal's absorb everything, and the rake is activated after every use keeping the box nice and clean and even. Secondly not a drop of litter outside of the box thanks to the deep walls. Last but not least my cat adapted to it immediately, and it even counts how many times the box has been used on the led display! This auto box has been a true lifesaver in our house! I love that it so clean and has a beautiful design as well as my cat loving it!