Health monitoring cat litter, made from tofu.

A plant-based tofu cat litter infused with a food-grade pH indicator. It works like a good clumping litter — firm clumps, strong odor control, low dust — and changes color with your cat’s urine pH so you can see a change at a glance.

Made mainly from plant fibers and plant starch, with a natural mineral binder and a food-grade pH indicator. No silica gel crystals. Read the full answer.

The granules react to the pH of fresh urine in under a second. Most of the time nothing happens at all — natural beige means the pH is where it should be, and a healthy cat usually sits around 6.0–7.5. The litter only starts to shift below about 5.3 (orange, then red) or above 7.7 (soft green, then deep green). How far it goes matters: a gentle shift is worth watching for a few days, a deep red or deep green is worth calling your vet about. Read the full answer.

No. TellTail is a litter, not a diagnostic device, and it doesn’t diagnose anything. A color change simply shows the urine pH has shifted. A gentle shift is a reason to keep watching for a few days; a strong one — deep red below 4.5 or deep green above 9 — is a reason to call your vet promptly. Read the full answer.

Yes, and this is worth knowing before it happens. Urine drifts alkaline for a few hours after a big meal, so an evening clump can read high for ordinary reasons. A clump left sitting in the box all day also drifts upward on its own. Urinary and struvite-control diets acidify on purpose. Re-read a fresh morning clump before breakfast — that one step rules out most innocent explanations. What matters is a pattern over several days, not a single reading. Read the full answer.

The indicator is food-grade. TellTail is low-dust and lightly scented, and is suitable for multi-cat homes and kittens 12 weeks and older. As with any litter, keep the box clean and fresh.

Flushable*: the plant-based clumps break down in water — flush the clumps a little at a time. Place cat droppings in the trash, not the toilet. Not recommended for septic systems or older / low-flow plumbing; when unsure, bin it and follow your local wastewater guidance. Read the full answer.

A 6 lb (2.72 kg) bag lasts roughly 3 weeks for one cat with daily scooping. With two or more cats, expect closer to ten days.

Two to three inches. Tofu granules need a real bed under them to lock a clump together — any shallower and the clump forms against the pan and sticks there. If clumps stick to the bottom, that is the cause nine times out of ten.

Only while switching. Clay dust settles over the granules and greys them out, so the color reads muddy instead of clean, and the two clump at different speeds. Mix for three or four days so your cat gets used to the texture, then go fully over and wash the box.

Same clumping and odor control you expect from a premium plant-based litter, plus a pH-reactive color you can read at a glance — no test strips, no powders, no app. Firm clumps also keep each visit separate, so today’s color isn’t mixed with yesterday’s.

TellTail is sold on Amazon, so delivery, returns and Prime shipping are handled by Amazon — usually a couple of days across the US.

A 30-day money-back litter-box guarantee on top of Amazon’s own returns. If it isn’t right for you and your cat, email [email protected] and we’ll make it right — a person reads it, not a queue.