I use Fresh Step Crystals. I flush so the clumps aren't too good for that. They do scatter it but I'm lucky with a bathtub that gets no use so I put their boxes in the tub and most stays in there. I still have to sweep though and it seems like my big cat uses the little box and the little one uses the big box so I have rolls in the tub. Easy enough to scoop up with the litter scoop though.

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