Colour-changing health monitoring litter

Your cat can't tell you they're sick. Their litter can.

★★★★★ 4.9/5 from 130+ cat owners

Litter Sense changes colour when your cat's urine changes - flagging urinary, kidney and bladder problems weeks before symptoms show.

🩺 Vet founded✅ 30-day guarantee🇬🇧 Free UK delivery
Get started - from £11.99 a bag

One bag = one cat, one month. Cancel anytime.

Your cat can't tell you they're sick.

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

  • Advanced Health Indicator

  • Colour Changing Technology

  • Superior Odour Control

  • Lightweight & Convenient

Cats are experts at hiding illness.
The problem

Cats are experts at hiding illness.

By the time you see symptoms, the problem has usually been building for weeks. The earliest warning signs show up in one place - the litter tray.

  • ● Urinary tract infections (UTIs)
  • ● Chronic kidney disease (CKD)
  • ● Bladder stones & urinary crystals
  • ● Feline lower urinary tract disease (FLUTD)
  • ● Diabetes & diabetic ketoacidosis
  • ● Urethral obstruction

Litter Sense doesn't replace your vet - it gets you there sooner.

▶ Watch the crystals react

Colour changing technology, working every single visit.

No sensors. No apps. No stress for your cat. Just chemistry you can see.

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Effortless by design

Health checks your cat does for you.

Step 1
🫗

Pour once a month

One bag fills the tray for a full month per cat. No clumps, no daily wet scooping.

Step 2
🐱

Your cat does the rest

Every tray visit becomes a passive health check. Nothing strapped to your cat, no stress.

Step 3
👀

Glance at the colour

Yellow-green means all clear. Anything else, you know weeks earlier than ever before.

Why Litter Sense

A better litter, even before the health monitoring.

🩺

Early health detection

Colour-changing technology highlights abnormalities in urinary pH and flags potential issues such as UTIs, bladder crystals, inflammation, or the presence of blood.

🔒

Traps odour on contact

Silica crystals absorb moisture instantly and lock odours inside - your home stays fresh between changes.

🧹

Low maintenance

No clumping, no daily urine scooping. Remove solids, stir, replace monthly. That's it.

☁️

Ultra low dust

Kinder on your cat's lungs and your floors - minimal tracking, no clay dust clouds.

Dr Bolu Eso
Veterinarian founded

"I kept seeing the same thing in clinic: cats arriving too late, owners who had no idea anything was wrong. I built Litter Sense so every owner can stay one step ahead - no vet visit required."

Dr Bolu Eso DrMedVet MRCVS
Veterinary Surgeon registered with the RCVS (Ref: 7312262). Co-founder of KittySense. 7+ years in clinical practice & TV and media presenter on animal health.
📷 @drbolueso🎵 @docboj✓ RCVS Verified
How to read it

Four colours. One quick glance.

The crystals react to your cat's urine. Tap a colour to see what it's telling you.

All clear
High alkalinity
High acidity
Possible blood
All clear

Yellow to light green is the normal, healthy range - the colour most healthy cats produce. Nothing to do but give them a fuss.

✓ No action needed
High alkalinity

Blue can be associated with urinary tract issues. Stir the litter and monitor - speak to your vet if it repeats.

👀 Monitor - vet if it repeats
High acidity

Orange signals highly acidic urine - may relate to metabolic or kidney concerns such as stones or crystals. Check with your vet if it persists.

👀 Monitor - vet if it persists
Possible blood

Red can mean blood has been detected - a warning sign of urinary or bladder trouble. If it appears again, contact your vet immediately.

🚨 Contact your vet

Litter Sense is a monitoring aid, not a diagnosis. Always speak to your vet about persistent colour changes.

Get started

Build your plan in two taps.

★ 4.9 · 130 reviews🩺 Vet founded💚 30-day guarantee
● Caught: UTI
★★★★★

"The crystals turned blue-green on day 9. Our vet confirmed a urinary infection with zero visible symptoms."

Sarah M. · Leeds · Mabel, 7
★★★★★ Rated 4.9 excellent | 130 reviews

Litter Sense | Advanced Health Monitoring Cat Litter

Vet Founded30-Day Money Back GuaranteeCat Friendly
How many cats?
🐱
1 cat

We'll send one bag per cat, per month - sized automatically.

How often should we deliver?
✓ Cancel anytime ✓ Pause or skip ✓ Renewal reminders
📦 Delivered by 🇬🇧 Fast GB shipping
Questions, answered

Everything people ask before trying it.

Will my cat actually use it?
Most cats transition easily. Sprinkle a layer of their old litter on top for the first few days. If your cat refuses within 30 days, the money-back guarantee covers you.
Is it safe for my cat?
Yes - non-toxic silica crystals, no added fragrance, ultra low dust.
How do I cancel my subscription?
From your account, in two clicks, anytime. Pause or skip too. No phone calls, no fees, and we email before every renewal.
How long does one bag last?
One bag covers one cat for one month. Multi-cat home? Pick your number of cats and we send the right amount.
Does it replace vet check-ups?
No - it's an early warning system that helps you get to the vet sooner, when treatment is simpler and cheaper.
What if the colour changes?
Stir and watch over 24-48 hours. If it persists, book a vet visit and mention what you saw.

Spot it weeks earlier. Treat it before it's serious.

From £11.99 a bag, delivered free. Cancel anytime.

Get started today

✓ 30-day money-back guarantee - if your cat won't use it, you don't pay.

From £11.99 / bagFree delivery · Cancel anytime
Get started
Caught early

Real cats. Real early catches.

● Caught: UTI ★★★★★

"The crystals turned blue-green on day 9. Our vet confirmed a urinary infection with zero visible symptoms. Antibiotics instead of an emergency."

Sarah M. · Leeds · Mabel, 7
● Caught: Blood in urine ★★★★★

"I'd never have spotted it in normal litter. The pink tint sent us straight to the vet - bladder stones, caught before a blockage."

David R. · Glasgow · Oscar, 11
● Caught: Early kidney signs ★★★★★

"Persistent orange flagged something was off. Bloods showed early kidney disease - diet change, and she's thriving at 12."

Priya K. · London · Luna, 12
The honest comparison

No other litter can do its job.

Features
Litter Sense
Clay
Paper / Wood
Health monitoring
✓
✗
✗
Absorbs odour
✓
~
✗
Lightweight
✓
✗
✗
Low dust
✓
✗
~
Low maintenance
✓
✗
✗