With 3 furbaby cats, I am always on the lookout to try a litter box with as little cat litter tracking as possible.  Decided to give this a try and so far I have to say it is working out real well.  The opening is big enough to be able to scoop the waste out without taking the lid off.  I like the grooves on the lid to trap any litter that gets in their paws before they do their final jump out of the litter area.  I still have a regular box for them to use so I can transition to another one of these easily and get rid of the traditional litter pans.  Very satisfied!