"It requires a lot of room to roll.
the product does work as it says it will, however, sometimes the waste gets collected in the sifter and just gets stuck there, or, it will collect underneath the removable waste collector so that whenever you pull it out to discard waste, stuff gets on your floor.
I've also never had a litter box that my cat tracks so much litter out of. and he doesn't take too well to litter mats, as i usually find the mats bunched up in a corner away from the litter box.
Cleaning is also really hard. I have yet to find a litter liner that will work with this litterbox, and once a week i usually attempt to take the whole litter box apart and scrub it down in the kitchen sink. However, with this box being so bulky, it is really hard to clean and usually results in a big mess.
It may be easier if you cleaned it in a shower, however, i don't do this because i find it to be unsanitary.
Overall it is a good product, its just not for me or my cat."