I really really enjoy this, and a bonus, my cats aren't scared of it. I got it late last night, and it's so quiet, the only thing I heard was the litter shifting. I haven't smelt anything from it, not like I do from the other two boxes. To dispose of used litter, you just turn it off, and pull out the tray, tie the bag, toss it and put in a new bag. I love it. It even has an app to keep track of cleaning, and the cats.