Senior Persian cat litter setup for mobility issues

A 15-year-old Persian with declining mobility is exactly the situation where the litter setup really matters — if getting in and out of the box becomes uncomfortable or difficult, box avoidance follows quickly, and that's a problem you want to get ahead of. Most cats prefer unscented, fine-grained clumping litter at the best of times, but for an older Persian with sore joints, soft texture underfoot becomes even more important than usual. To help me point you in the right direction: is she already showing any signs of avoiding the box, do you have any dust concerns (Persians can be sensitive), and how many boxes do you currently have set up?

Good that you're getting ahead of it — high-sided boxes are one of the first things that trip up older cats, and Persians tend to be low to the ground anyway so the step-over height hits them sooner than it would a lankier breed. One box is probably fine for a single indoor cat, but I'd think about where it's positioned too — no stairs between her resting spots and the tray if you can help it. Can you tell me roughly what litter you're using now, and is she long-coated? Persian fur can trap litter granules if the grain size is too coarse.

That's worth changing. Medium-grain litters can catch in long Persian fur and get tracked back to where she's resting, and for arthritic paws, finer and softer underfoot genuinely makes a difference to whether she's comfortable standing in the box long enough to do what she needs to do. Here's what I'd pair together: for the box, the Savic Nestor Classic open tray — it has a low front entry of around 6cm while still having taller back and side walls to contain scatter, which is a practical balance for a senior cat. For litter, Dr. Elsey's Ultra Precious Cat clumping litter is the one I'd go to — very fine grain, almost sand-like, low dust, unscented, and it clumps hard so it's easy to keep clean. It's not always cheap but a 40-pound bag lasts well with one cat. The combination of a low entry and that soft, fine texture tends to keep older cats using the box reliably when they might otherwise start hesitating.

The Savic Nestor is a straightforward open tray — smooth interior, no awkward corners, rinses clean easily. For depth, around 7–8cm of litter is the sweet spot with Dr. Elsey's Ultra: deep enough that she can dig comfortably without hitting the base, which matters for fine-grain litters that compact quickly. Any deeper and you're wasting litter; any shallower and the clumps can stick to the bottom. Scoop daily if you can — fine clumping litter performs best when you're pulling clumps before they break apart. One thing to mention: if her mobility continues to decline, you can cut the front entry of the Savic tray down even lower with a craft knife, it's a thin enough rim to do that without much effort.

Good call getting it sorted now rather than after she's already started avoiding. The transition is usually smooth — just mix a little of the new litter in with the old over a few days if she's particular, though most cats take to finer litter quickly because it's closer to what they'd choose naturally. Keep an eye on how she's stepping in over the next few weeks; if she's still hesitating even with the lower entry, a folded towel just outside the tray can help her feel steadier on the approach.