I mix around half and half World's Best and Swheat Scoop into four large Omega Paw self-cleaning litterboxes.
I overfill them, roll them, and the overflow is caught into the handle part which I pour into the next box to top them off to max capacity. I also have a line w/ black magic marker drawn on which represents the full mark, so I can see when its running low easily.

I like that they are enclosed, which minimizes litter being kicked out or other accidents.
Occasionally pee clumps stick to the bottom of the bin, but I just roll it and its easily seen and a litter scoop dislodges it w/o issue. Beats scooping forever trying to find everything.
I keep two each in two closets with cat doors for entry, with a large ribbed doormat on the floor and a motion activated battery powered nightlight, and when pulling forward and rolling give a quick spray of Oust air sanitizer which I keep there, which together w/ Swheat Scoop w/ is good at absorbing odors w/ active enzymes eliminates odors getting into the house. Litter gets flushed down toilet.
Litter is topped off as needed, and replaced entirely every 3 months. For the boxes, just use a wet wipe if I see any little messes, and otherwise are cleaned w/ a bleach based general purpose cleaner outside under a hose and brush whenever completely replacing litter.

Only real problem I have had to date is that when Buttercup used to have soft stool, I think the limited space an enclosed litterbox provides resulted in her on occasion stepping on her poo, and Wesley would scratch just the plastic where the litter catch was instead of burying his poo, but has stopped that.
I recommend the setup.
