This litter box does a very good job in containing tracked litter, but it is harder to clean. If you want to recycle the litter that is tracked into the tunnel (stairs) portion, there is no easy way to do this because vacuuming is the only way to really get it out besides turning the whole thing upside down.  Also, the curved inside edges of the basin mean they are harder to completely scrape clean when the clump is clinging to the edge.  This is true even with the "slide" litter now available.  Plus, urine can collect along the rim, so if you're not careful, it can drip off the lid when you remove it. So cleaning this box means also wiping down the top edge of the bottom section and the bottom edge of the lid with a paper towel.  I probably wouldn't buy this again unless the most important thing was to minimize tracked litter.  Litter boxes with top entry are almost as good at this and easier to clean, plus they take up less space on the floor.