Health Signal

4.6

Cat litter

€11.25

€9.95

1 bag = 1 month

Because your cat can’t tell you when something’s wrong.

Vet-recommended & lab-tested

Trusted by experts – safe, clean, and carefully developed

€ 11.25 – € 67.50 — or from € 9.90 – € 59.40 / month

How many cats do you have?

Clear

71% of our customers chose a subscription - 12% off every month, cancel anytime.

Delivery in 1 -2 working days

Is this safe for my cat?

Health Signal is made from silica gel, a mineral-like material also found in products like food packaging and toothpaste. It’s completely safe for cats, even if they lick it. The granules contain tiny pores that instantly absorb urine and lock in odors, keeping the litter box cleaner for longer, without clumping, or smelling. No perfumes, no dust clouds, no worries, just smart, hygienic cat care.

Is this safe for my cat?

What do the colors in the litter box mean?

After each pee, the crystals usually show one main color in one spot. Yellow to olive green? All good. If you see red, orange or blue-green that doesn’t fade within 48 hours, it’s smart to check in with your vet. No stress, just a clever way to spot changes early.

Can I use this with an automatic litter box?

Yes, and surprisingly well. While most non-clumping litters don’t work with automatic boxes, Health Signal does. Solid waste is still removed by the system, and the urine is absorbed deep into the crystals. The surface stays dry, odor-free, and color changes remain visible. So you still get your health insight, even with a self-cleaning setup.

Why should I switch from my current litter?

Because Health Signal turns your litter box into something smarter. It doesn’t just hide odors, it absorbs faster, lasts longer, and gives you real-time health insights every time your cat pees, all throughout the day. One color, one signal, continuous clarity. No clumps, no dust, no stress. Just smarter care, built into your routine.

What if my cat doesn’t use it right away?

Some cats need a little time to adjust, and that’s completely normal. To help with the transition, start by mixing Health Signal with their current litter and gradually increase the amount. The formula is scent-free, low-dust, and soft on paws, so most cats feel comfortable quickly. With a bit of patience, almost all cats make the switch with ease.

My cat seemed perfectly healthy

That was until the litter suddenly turned red. The vet found an early urinary infection with traces of blood. We caught it just in time.

No emergency, no hospitalization. Thanks to CatCheck, I helped my cat and avoided expensive treatment.”

-Laura, cat parent to Ollie

Early signs of health issues

Our color-changing crystals alert you to changes in your cat’s urine that may indicate an underlying health problem. From urinary infections to stress-related issues or even blood in the urine – Health Signal helps you catch it early. No guessing, just daily peace of mind.

Clean, odor-free and low-maintenance

Health Signal absorbs urine instantly and locks in odors without using perfume. No clumps, no sticky mess, no unpleasant smell when you open the box. Whether you scoop by hand or use an automatic litter box, it stays fresh and hygienic with minimal effort.

No tracking, no dust – just a clean home

Our low-dust granules don’t stick to paws or fur and stay where they belong: in the litter box. That means no trail of litter on your floor and no clouds of dust. Ideal for sensitive cats – and for people who like a clean home.Health Signal absorbs urine instantly and locks in odors without using perfume. No clumps, no sticky mess, no unpleasant smell when you open the box. Whether you scoop by hand or use an automatic litter box, it stays fresh and hygienic with minimal effort.

This is what our
customers say

Read here what other customers think of us.

View more honest reviews

Still smells fresh with two cats

“I used to notice the smell as soon as I walked in. Not anymore. And I don’t have to clean as often either.”

– Yasmin

Works just fine with my robot box

“I wasn’t sure it’d be compatible, but it works great. The color change still shows up clearly.”

– Lisa

No more litter trails

“She used to track litter all over the place. This one stays where it belongs.”

– Sophie

Total upgrade from regular litter

“I used to buy whatever was on sale. This is just… smarter. You can really tell.”

– Noor

I wouldn’t have noticed otherwise

“My cat seemed totally fine, but the litter suddenly changed color. Turned out it was a mild UTI. So glad I caught it early.”

– Sarah

Still smells fresh with two cats

“I used to notice the smell as soon as I walked in. Not anymore. And I don’t have to clean as often either.”

– Yasmin

Works just fine with my robot box

“I wasn’t sure it’d be compatible, but it works great. The color change still shows up clearly.”

– Lisa

No more litter trails

“She used to track litter all over the place. This one stays where it belongs.”

– Sophie

Total upgrade from regular litter

“I used to buy whatever was on sale. This is just… smarter. You can really tell.”

– Noor

Caught it just in time

“My vet said if I’d waited, it could’ve gotten worse. The litter’s color change is the only reason I noticed.”Recommended by a friend and now I understand why! What a great product. No more nasty smells in the litter box and reassurance that my cat is in good health. After a one-time purchase, I went for a subscription. I never want anything else… and neither does my cat haha.”

– Emma

I wouldn’t have noticed otherwise

“My cat seemed totally fine, but the litter suddenly changed color. Turned out it was a mild UTI. So glad I caught it early.”

– Sarah

Real cats, real stories

How to Use Health Signal
Cat Litter:

Start Fresh

Begin with a clean litter box. Pour Health Signal to create a 5 cm layer covering the bottom. This ensures optimal odor control and provides a fresh start for your cat.

INITIAL COLOR CHECK

Within 1-2 hours after your cat uses the litter box, compare the color of the crystals to the providedguide. This initial check helps you start tracking potential health indicators.

ESTABLISH A BASELINE

Observe the color changes daily. After 5 days, identify the most common color within the normal range. This becomes your cat’s baseline health color.

DAILY Maintenance

Scoop out solid waste daily to keep the litter box clean. Regular maintenance ensures a healthy and pleasant environment for your cat.

Maintain Depth

Gently stir the litter every day and add more Health Signal as needed to maintain a consistent 5 cm depth. This keeps the litter effective and extends its usability.

MONTHLY REFRESH

Once a month, empty and clean the litter box completely. Refill it with a new bag of Health Signal for continued health monitoring and freshness.

Buy Health Signal now

Gentle on the paws - not sticky

High absorption rate

A trusted tool for early health detection

Cats are masters at hiding pain and symptoms. That’s why Health Signal is designed to help you catch subtle changes in your cat’s urine – directly from the litter box. When something’s off, the crystals change color as a gentle warning sign.

Veterinarians recommend Health Signal as a smart, supportive tool in your daily care routine. No stress, no hassle – just an extra layer of love and health monitoring for your feline friend.

Health Signal

Vet-recommended & lab-tested

Delivery in 1 -2 working days

This is what our customers say

Still smells fresh with two cats

– Yasmin

Works just fine with my robot box

– Lisa

No more litter trails

– Sophie

Total upgrade from regular litter

– Noor

I wouldn’t have noticed otherwise

– Sarah

Still smells fresh with two cats

– Yasmin

Works just fine with my robot box

– Lisa

No more litter trails

– Sophie

Total upgrade from regular litter

– Noor

Caught it just in time

– Emma

I wouldn’t have noticed otherwise

– Sarah

How to Use Health Signal Cat Litter:

Start Fresh

INITIAL COLOR CHECK

ESTABLISH A BASELINE

DAILY Maintenance

Maintain Depth

MONTHLY REFRESH

Comparison

Health Signal

Clay

Vegetable

Tofu

Recommended by Veterinarians

A trusted tool for early health detection

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This is what our
customers say

How to Use Health Signal
Cat Litter:

Recommended by
Veterinarians