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The fastest-clumping formula in the range. Made from 100% corn and cassava — a plant-based litter that performs like clay, without the dust, chemicals, or landfill guilt.
“It’s THE BEST cat litter I’ve ever used in the big three categories: clumping, tracking, and odor control.”
— Jackson Galaxy, Cat Daddy, Chief Cat Advocate & in-house behaviourist at Sustainably Yours
The full Sustainably Yours range — Small Grain clumps the fastest of the three
Best for:
- Owners who want the quickest possible clumping
- Automatic and self-cleaning litter boxes — fast clumps mean a smooth cycle every time
- Multi-cat homes where locking down odour quickly matters most
- Cats with sensitive paws — the grains are smooth, round and soft underfoot
One honest trade-off: Small Grain has the finest texture we make, so if your cat is a heavy tracker, Large Grain is the better pick.
Why Sustainably Yours Small Grain?
Our finest grain clumps fast and controls odour well, forming tight, solid clumps that lift out in one piece instead of crumbling. The natural starches in corn and cassava trap ammonia as it forms, so odour is dealt with at the source rather than covered up with fragrance.
Virtually zero dust — easier on little lungs
Firm clumps — every scoop
- 100% natural — just corn and cassava. No clay, no silica, no synthetic chemicals.
- Unscented odour control — traps ammonia as it forms instead of masking it with perfume.
- Firm, scoopable clumps — they hold together past 24 hours, so you waste less litter each scoop.
- Easy health checks — the pale colour makes urine easy to see. Pink or red can point to a urinary problem; dark yellow can mean dehydration. Either is worth a vet visit.
- Very low dust — dust is removed at several stages of production. Often suggested by vets for kittens and cats with sensitive airways.
- Gentle on paws — smooth, rounded grains that suit kittens and fussy cats.
- Biodegradable — breaks down naturally rather than sitting in landfill for centuries like clay.
Awards & Recognition
Named Best Natural Cat Litter by Business Insider
Named Best Cat Litter by Modern Cat magazine
Featured in the New York Post roundup of top cat litters
Thousands of five-star reviews worldwide
Built for fast absorption and solid clumps
Our Commitment to the Planet
A portion of every purchase goes to the Rainforest Trust, which has helped protect more than 42 million acres since 1988.
- Made from renewable corn and cassava
- Packaging is 51% bio-plastic made from sugarcane
- Key production stages run on biomass energy rather than fossil fuels
- Every raw-material supplier has to pass heavy-metal and lead testing
- Closed-loop production — the litter biodegrades back into the soil
Around 85% of the world's cat litter is made from bentonite clay, which sends close to 10 million tonnes to landfill every year. Ours doesn't.
Product Details
| Weight | 4.5 kg / 5.9 kg |
| Dimensions (4.5 kg) | 28 cm × 14 cm × 32 cm |
| Dimensions (5.9 kg) | 27 cm × 15 cm × 42 cm |
| Ingredients | Corn & Cassava |
| Scent | Unscented |
| Suitable for | All cats, all lifestages, all breeds |
How to Use
Fill your litter box with at least 7–8 cm of litter. Scoop clumps and solid waste daily, topping up as needed. Replace the lot every 3–4 weeks. Store somewhere cool and dry, and put used litter in your household bin — please don't flush it.
Please note: Wash your hands thoroughly after scooping. Pregnant women and anyone immunocompromised should avoid litter box maintenance.
Shipping Policy
xWe ship from our Australian warehouse through trusted logistics partners, so your order arrives quickly and reliably.
Shipping Zones & Rates
New South Wales (NSW)
| Weight | Fee |
|---|---|
| 0 – 6 kg | $7.99 |
| Over 6 kg | $9.99 |
| Orders $99+ | FREE |
Other States (VIC, QLD, SA, WA, TAS, ACT) – Metro & Regional
| Weight | Fee |
|---|---|
| 0 – 6 kg | $12.99 |
| Over 6 kg | $15.99 |
| Orders $99+ | FREE |
Other States – Remote Areas
| Weight | Fee |
|---|---|
| 0 – 6 kg | $49.99 |
| Over 6 kg | $69.99 |
Free shipping isn't available for remote areas, and we're unable to ship to the Northern Territory (NT).
Order Processing
We process orders within 1–2 business days and email you tracking details as soon as your order is on its way.
Estimated Delivery Times
- NSW: 3–8 business days
- VIC, QLD, SA, WA, TAS, ACT: 3–15 business days
Metro areas are usually quicker; regional and remote areas can take a little longer.
A Few Things to Note
We're unable to deliver to PO Boxes or parcel lockers. Your final shipping cost is always shown at checkout before you pay.
Subscription Orders
Subscriptions are available to NSW and metropolitan/regional postcodes in VIC, QLD, SA, WA, TAS and ACT only. We don't offer subscriptions to the Northern Territory or remote postcodes in VIC, QLD, SA, WA, TAS or ACT — customers in those areas are welcome to place one-time orders instead.
Return Policy
xAt Furbaby Pet-AU we want you to be happy with what you've bought. Our policy follows the Australian Consumer Law (ACL), so you can shop with confidence.
Your Rights under Australian Consumer Law
You're entitled to a replacement, repair, or refund if a product is:
- Faulty or defective
- Not as described on our website
- Different from a sample or demonstration model
- Not fit for its intended purpose
Change of Mind
For hygiene and safety reasons, we can't accept change-of-mind returns on cat litter or any opened pet products.
If an item is unopened and in its original condition, get in touch within 7 days of delivery and we'll do our best to help (subject to approval).
How Returns Work
- 1. Get in touch — email info@furbabypet.com.au with your order number, what's wrong, and a few photos if relevant
- 2. We take a look — we'll review your case and confirm whether it's eligible for a refund, repair, or replacement
- 3. Send it back — once approved, we'll send you the return address and instructions
Return Shipping Costs
- We cover return shipping if the item is faulty, damaged, or sent in error
- You cover return shipping for change-of-mind returns, where these are accepted
Refunds
Once we've inspected your return, we'll refund you to your original payment method.
Please allow 5–10 business days for the money to land back in your account.
Q&A
xWhat is Sustainably Yours cat litter made from?
Sustainably Yours is made from a blend of corn and cassava (tapioca) — 100% plant-based, with zero clay, silica, bentonite, or synthetic fragrances. The bag itself is made from sugarcane bio-plastic and is fully recyclable.
Is it safe for kittens?
Yes — it's one of the few natural litters vets specifically recommend for kittens. It's dust-free, fragrance-free, and chemical-free, making it ideal for young cats with developing respiratory systems. Unlike clay, it poses no ingestion risk if a curious kitten nibbles it.
How does the odour control work?
Sustainably Yours uses a patented ammonia-encapsulation technology. Rather than masking smells with added fragrance, it chemically neutralises ammonia — the main driver of litter box odour — on contact. Most cat owners notice a dramatic difference within the first week.
How well does it clump?
It forms rock-hard, tight clumps that don't crumble or stick to the box. Scoop clean every time with nothing left behind. The clumps stay firm even if they sit for a day or two.
Which grain size should I choose?
Mixed Grain — Our best-seller. Balances clumping speed with odour control and suits most cats and litter box setups.
Small Grain — Clumps the fastest. Ideal for cats who prefer a finer, sand-like texture. Not recommended for Litter-Robot units.
Large Grain — Best for transitioning from clay. Familiar texture, least tracking, lowest dust of all three.
Does it track around the house?
Tracking is significantly less than clay. Large Grain tracks the least; Small Grain can cling to paws a little more due to its lightweight texture. A litter mat at the box exit makes a big difference for all three.
Is it compatible with Litter-Robot or automatic litter boxes?
Mixed Grain and Large Grain work well with most self-cleaning litter boxes. Small Grain is not recommended for Litter-Robot units, as finer granules can fall through the sifting screen. Always check your unit's manufacturer recommendations.
How long does one bag last?
One 4.5 kg bag lasts approximately 1 cat for 3 weeks with daily scooping. The 5.9 kg bag extends this to roughly 4 weeks. A helpful rule of thumb: one 4.5 kg bag per cat per month.
Is it flushable?
The granules are biodegradable, but we recommend disposing of used litter in your household bin rather than flushing. Australian plumbing systems vary and local water authorities may have restrictions on organic waste flushing.
Is it safe for the environment?
Yes. Sustainably Yours is plant-based, biodegradable, and carbon-neutral. The bag is made from sugarcane bio-plastic. Production uses biomass energy, and the brand has partnered with the Rainforest Trust to protect over 42 million acres of natural habitat worldwide.
Can I monitor my cat's health with this litter?
Yes — the light-coloured granules make it easy to spot changes in urine colour, an early indicator of health issues like urinary tract infections, kidney problems, or dehydration. Many vets recommend natural litters for this reason.
Is it tested for heavy metals or toxins?
Every batch is independently tested for heavy metals and harmful contaminants. Results consistently come back clean, giving you peace of mind that what's in the litter box is safe for your cat, your family, and your home.
How does Subscribe & Save work?
Subscribe to regular deliveries and save 10% on every order. You can pause, skip, or cancel your subscription at any time from your account dashboard — no lock-in contracts, no hidden fees.
Is Sustainably Yours available in Australian stores?
At the moment, Sustainably Yours is available exclusively online through Furbaby Pet in Australia. Ordering direct means the freshest stock, the best price, and free shipping on orders over $99 anywhere in Australia.
My cat is fussy — what if they don't accept it?
Most cats accept Sustainably Yours quickly. If you're transitioning from clay, we recommend mixing 25% Sustainably Yours with 75% existing litter and gradually increasing the ratio over 1–2 weeks. Small Grain mimics the fine texture of sand, which cats instinctively prefer. If you need help, contact us — we're happy to guide you.
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