Loved by cat parents across the US

The cat litter that changes color with pH.

TellTail is a premium clumping litter infused with a food-grade pH indicator — it changes color with your cat's urine pH, so you can simply see it. No strips, no apps, no fuss.

See the color change

5.5–7.0Normal pH band

< 1 secColor response

~3 weeksPer 6 lb bag

The color key

One glance shows where the pH falls.

TellTail granules are infused with a food-grade pH indicator. Where your cat goes, the litter changes color — and the color maps to where the urine pH sits on the scale.

pH <4 · very acidic5.5–7 · normalpH >9 · very alkaline

pH < 4

Very acidic

Well below the normal 5.5–7.0 range.

pH 4–5.5

Below normal

Slightly acidic — under the normal range.

pH 5.5–7

Normal

The typical range for cat urine.

pH 7–9

Above normal

Slightly alkaline — over the normal range.

pH > 9

Very alkaline

Well above the normal 5.5–7.0 range.

Try it yourself

Drag to see a reading.

This is exactly how the litter behaves. Move the slider to simulate your cat's urine pH and watch the color change in real time.

6.2pH reading

Normal range

TellTail pH simulator

Normal sits between 5.5 and 7.0. The color shifts further as the pH moves outside that range.

3.5 · acidic10 · alkaline

In the normal rangepH 6.2 sits inside the typical 5.5–7.0 range.

Three steps, zero effort

It works the way litter already does.

How TellTail works in three steps: 1) Pour and go — fill the box like normal; 2) Your cat does the rest — the granules react to urine pH; 3) Read the color — green is the normal range, and a shift toward red or violet means the pH moved outside it.

Why cat parents switch

A better litter first — color is the bonus.

TellTail nails the basics of a premium plant-based tofu litter, then adds a pH-reactive color you can read at a glance.

Low dust by design — made from food-grade tofu fiber, not silica crystals, so there is no dusty cloud when you pour.

Locks odor inside the clump — plant fiber plus fast clumping keeps things fresh even in multi-cat homes.

Safe if she licks her paws — food-grade tofu fiber and pea starch, with no silica and no clay dust.

TellTail Color Changing Preventive Cat Litter — 6 lb (2.72 kg) natural tofu stand-up pouch

The product

TellTail Color-Changing Cat Litter

New — be the first to review

Ultra-clumping, low-dust, lightly scented — and it changes color with your cat's urine pH, so you can see it at a glance. Choose a plan:

Single bag Most popularOne-time purchase · 6 lb (~3 weeks)

$34

3-bag bundle Save $12One-time · 18 lb (~9 weeks)

$90~~$102~~

Free carbon-neutral shipping on every order

30-day money-back litter-box guarantee

Low-dust · safe for multi-cat homes & kittens 12 wk+

Reviews

What cat parents say.

	Ordinary litter	TellTail
Clumping & odor control	✓	✓
Low dust, lightly scented	✓	✓
Flags pH changes instantly	—	✓
See pH at a glance, no strips	—	✓
No strips, powders, or apps	✓	✓

Good questions

Everything you'd want to ask.

Start today

A smarter litter box, the easy way.

Join the cat parents switching to a cleaner, smarter litter — clumps hard, low dust, and changes color with your cat's pH.