Questions, answered.

It's a silica crystal cat litter infused with pH-sensitive indicators that change colour in response to your cat's urine — giving you a daily early warning system for UTIs, kidney issues, diabetes and blood.

Yes. The crystals are non-toxic and the indicators are completely inert. Safe for cats of all ages.

Our crystals are recyclable as general waste in the UK and our packaging is 100% recyclable kraft paper.

Tiny pH-sensitive compounds inside each crystal react to specific chemical markers in urine. We've calibrated four colour ranges to map onto common health indicators.

Fill your tray to a depth of 3-4cm — about a third of a 3.5kg bag for a standard tray.

Once daily, ideally in good light.

It still works, but you'll need to monitor more closely. We recommend separating trays where possible for clearer readings.

Yes — a small amount of clumping litter is fine and won't disrupt the indicators.

We send you a fresh 3.5kg bag every month for £27.99 (20% off). Skip, pause or cancel anytime from your account.

Yes — choose between every 4, 6 or 8 weeks at checkout.

One click from your account dashboard. No emails, no questions.

Yes — to all UK mainland addresses. Northern Ireland and Highlands may take 1-2 extra days.

Dispatched within 2 working days. Most orders arrive within 2-3 working days.

Free on orders over £30, and always free on subscriptions.

Not yet — we're UK-only for now.

Unopened bags can be returned within 30 days for a full refund. Free UK returns.

Email hello@sablepaw.co.uk with a photo and we'll send a replacement immediately.

Yes — we offer a 30-day satisfaction guarantee on first orders, even if opened.