Your box's allowed litter type comes first, and your cat still needs to accept the texture and scent. These four common options show the practical tradeoffs.
Quick answer
For most sifting-style boxes, start with an unscented, low-dust, hard-clumping medium-grain litter. Choose crystals, proprietary litter, or another material only when your machine permits it.
Compare compatible options
Your machine's manual wins. Confirm the permitted material and granule size, then compare clump strength, dust, tracking, odor control, and fragrance.
Choose for the machine and your cat
Prioritize clumps that form quickly and stay intact through the cycle.
Choose low dust to reduce buildup on sensors and internal parts.
Use a granule size that sifts cleanly without falling through too early.
Favor unscented litter when your cat or household is fragrance-sensitive, and watch tracking and moisture with plant-based formulas.
Switch gradually
Mix a little of the new litter into the old over about a week instead of replacing it all at once. If your cat hesitates or stops using the box, pause the change and follow our box-avoidance guide.
Want a hand with the deeper clean?
You can handle routine upkeep at home and leave the occasional teardown to us. Start with a one-time Deep Clean; quarterly care is available after that first visit.
Good to know
Common questions
It depends on the machine. Many sifting-style boxes call for clumping litter, while other designs are made for crystals, pellets, or proprietary litter. Follow the requirements for your specific model.
Yes — dust cakes onto sensors and internal parts over time (a common cause of cycle issues) and isn't great for you or your cat to breathe. Low-dust, hard-clumping formulas keep the unit running cleaner for longer.