Best litter for two cats with different box preferences

Having two cats with opposite box preferences is a real juggling act — one wanting a covered box, the other refusing to go near one. The good news is the litter itself can stay consistent across both setups, which makes life a lot easier. Litter preference genuinely matters: cats are far more likely to use the box reliably when the texture and scent suit them, and most cats — regardless of age — do best with unscented, fine-grained clumping litter rather than the heavily scented options. So before I point you toward anything specific: are there any litter box avoidance issues with either cat, and do you need something dust-free or low-tracking?

That's really useful to know. Dust is a legitimate concern with a cat who's had respiratory issues — a lot of clumping litters kick up quite a bit, especially when the cat digs. Low-dust should be the priority here, not just low-tracking. Can I ask what litter you're currently using? And are either of the cats particularly fussy — any history of rejecting a new litter when you've switched before?

That tells me the older cat needs a texture that isn't too far from what she knows — so I'd avoid anything too coarse or pellet-based, which would be a big change. Given the dust concern, the low-tracking need, and the fact you've got two cats using different box styles, I'd go with World's Best Cat Litter — the Original Unscented version. It's made from whole-kernel corn, which means it clumps firmly, produces virtually no dust, and has almost no scent of its own. It's fine enough in texture that it won't feel alien to a cat used to clay clumping litter, and it works just as well in a covered box as an open one. It's also a lot lighter than clay, which matters when you're managing two boxes. The only thing to be aware of: transition slowly with your older cat, mixing it in over a week or so rather than switching cold.

Fair scepticism — a lot of them don't live up to it. World's Best isn't perfect, but the corn granules are heavier than standard clay particles, so they don't cling to paws the way fine clay dust does. Most people find it tracks noticeably less than a typical supermarket clumping litter. If your cats are big diggers it'll still move around some — no litter is completely track-free — but combined with a mat outside each box you should see a real difference. For a two-box household where dust is the main concern, it's the most practical choice that covers both priorities without asking your cats to adapt to something completely unfamiliar.

Good plan. Start with about 25% new litter mixed in, and give your older cat a few days at each stage before increasing. If she's hesitant at any point, slow it down rather than pushing through — she'll get there. World's Best is widely available on Amazon UK in larger bags which works out better value for two cats. Good luck with both of them.