Comparing Cat Litter Types: Which One Suits Your Cat?

August 11 2026, by Michael van Wassem, 9 min reading time

Clay, silica, tofu or wood pellets: which cat litter suits your cat? A practical comparison of clumping, odour control, dust and price, with tips for switching litter.

Clay, silica, tofu, wood or paper: the range of cat litter on offer is huge, and not every type suits every cat or household. The difference mainly comes down to clumping, odour control, dust and price. Below you'll find a comparison of the five most common types, so you can see straight away what suits your situation, and how to avoid mistakes when switching.

• Quick answer: which cat litter is best?
• The 5 main types at a glance
• Clay (bentonite) litter
• Silica litter
• Plant-based litter
• Wood and paper pellets
• Which litter suits your situation?
• Common mistakes
• How to switch litter
• Checklist
• Frequently asked questions
• Summary and conclusion

Quick answer: which cat litter is best?

There is no single litter that's best for every cat and every household. Clumping clay (bentonite) litter remains the most widely used choice because it absorbs well and is easy to clean. If you want less dust and a longer time between full changes, silica litter is a logical option. For a lighter, often biodegradable alternative, choose a plant-based clumping litter made from tofu, corn or peas. Wood and paper pellets are especially suited as a budget-friendly or low-dust choice, for example for kittens or cats with sensitive airways.

The 5 main types of cat litter at a glance

Before choosing, it helps to see the key differences side by side.

Clay (bentonite): the classic clumping litter

Bentonite is a natural clay that absorbs moisture and binds into a firm clump. You remove that clump with a scoop, leaving the rest of the litter clean. Advantages include strong absorbency, an affordable price and wide availability. The main downside is dust when filling or shaking the tray, which can be unpleasant for people with asthma or allergies, and for cats with respiratory issues. Bentonite is also a mined mineral, so it isn't biodegradable or compostable.

Silica litter: minimal upkeep, a different approach

Silica gel crystals absorb moisture and odours without clumping. Instead of scooping daily, you remove solid waste and only replace the whole layer after two to four weeks, depending on how many cats you have. Silica produces almost no dust and is lightweight, which is handy if you carry the bag yourself. The downside: some cats take longer to get used to the texture, and the crystals cost more per litre than clay. Silica is not biodegradable either.

Plant-based clumping litter: tofu, corn and peas

Litter made from tofu, corn or peas clumps just like clay litter, but is made from plant by-products. That makes it lighter, often lower in dust, and in many cases compostable or biodegradable (always check the packaging for the correct disposal guidance in your area). This type of litter is a good option for cats with sensitive paws or airways, and for kittens who occasionally nibble on litter: plant-based versions are generally less risky than large amounts of clay litter.

Wood and paper pellets: the budget-friendly options

Wood pellets are made from compressed sawdust and absorb moisture well, with a mild, natural wood scent. Some versions clump, others break down into a fine layer that you remove with a wide-slot scoop or sieve. Paper pellets are often made from recycled paper, produce almost no dust and are hypoallergenic, which makes them popular after surgery such as neutering, or for kittens. The downside of both types is weaker odour control than clay or silica, and not every cat accepts the different texture under its paws.

Which litter suits your situation?

Use the overview below as a guide when choosing.

• Kitten or recently neutered cat: choose a low-dust, soft litter such as paper pellets or a plant-based version.
• Cat or owner with respiratory issues: avoid dusty clay litter and choose silica, paper or wood instead.
• Multiple cats at home: a litter with strong odour control, such as clay or silica, works best combined with more frequent cleaning.
• Self-cleaning litter tray: always check the manufacturer's recommended litter first; not every type clumps firmly enough for mechanical trays.
• Tight budget: clay litter and basic wood pellets are usually the most affordable per litre.
• Environmentally conscious: plant-based litter and wood or paper pellets are compostable or biodegradable; clay and silica are not.

Common mistakes with cat litter

• Using too little litter. A layer of less than five centimetres absorbs too little and clumps poorly. Fill up to the amount recommended on the packaging.
• Not scooping daily. Even clumping litter needs clumps and solid waste removed every day, otherwise odour builds up and your cat may start avoiding the tray.
• Flushing litter down the toilet. Even if the packaging lists this as an option: cat faeces can contain the parasite Toxoplasma gondii, which survives most wastewater treatment. Dispose of used litter with your general household waste instead.
• Switching litter overnight. A sudden change can cause your cat to avoid the tray. Build up the transition gradually, as described below.
• Not emptying and cleaning the tray fully on a regular basis. Even with daily scooping, bacterial odour builds up in the tray itself over time. Empty and clean the tray completely at least once every one to two weeks with a mild, unscented cleaning product.

⚠️ Be extra careful with kittens: they explore the world with their mouths and may eat small amounts of litter. If in doubt, choose a paper or plant-based version until your kitten is older.

How to switch to a different litter gradually

Cats are sensitive to sudden changes to their toilet. Mix in roughly a quarter of the new litter with the old litter during the first week, gradually increase that proportion every few days, and use only the new litter after about two weeks. If you're unsure whether your cat will accept the change, temporarily place a second tray with the new litter next to the familiar one, so your cat can choose for itself.

💡 Does your cat start using the tray less often, or go outside it, after switching? Go back to the previous litter and slow down the transition.

Checklist: choosing cat litter

• First decide whether clumping, odour control or low dust matters most for your situation
• Take kittens, sensitive airways or a self-cleaning tray into account
• Compare the price per litre, not just the price per bag
• Never switch abruptly: build in a transition of at least two weeks
• Always dispose of used litter with general household waste, never down the toilet
• Clean the tray itself completely at least once a week, in addition to daily scooping

Frequently asked questions

How much cat litter do I need per month?

That depends on the type of litter, how many cats you have, and how often you replace the whole layer. With one cat and clumping litter, you can generally expect to use a few litres a week; with silica or wood it may be less, because you replace the entire layer less often. Watch your usage in the first month and adjust your stock accordingly.

Can I flush cat litter down the toilet?

No, this is not recommended, even if the packaging lists it as an option. Cat faeces can contain the parasite Toxoplasma gondii, which is harmful to aquatic life and isn't always filtered out by wastewater treatment. Dispose of used litter with general household waste.

Which cat litter produces the least dust?

Paper pellets and most plant-based versions produce the least dust. Clay litter is usually the dustiest, especially when filling the tray. Pour new litter in gently rather than shaking it out of the bag.

Can I mix two types of cat litter?

Mixing temporarily is fine, and is actually recommended when switching to a new type. For permanent use, it's more practical to stick to one type, since clumping and cleaning then stay predictable.

Which cat litter is the most environmentally friendly?

Plant-based litter made from tofu, corn or peas, along with wood or recycled paper litter, is biodegradable or compostable, unlike clay and silica, which are made from mined minerals. Do check local rules on composting used cat litter, though: because of the risk of parasites, this is usually only recommended for non-edible plants.

How much does cat litter typically cost?

Clay litter and basic wood pellets are usually the cheapest per litre. Silica and plant-based versions tend to cost more, but sometimes last longer because you replace the entire layer less often. Always compare the price per litre rather than just the price per pack.

Summary and conclusion

There's no single best cat litter: clay remains the reliable classic, silica needs replacing less often, plant-based litter is lighter and often biodegradable, and wood or paper pellets are budget-friendly and low in dust. Choose based on your cat's sensitivity, your household and your priorities around odour, dust and the environment, and always build in a gradual transition when switching.

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