The Best Cat Litters: A Complete Guide to Choosing the Right One

Choosing the right litter for your cat may seem simple, but there's more to consider than meets the eye. The type of litter influences odour control, home cleanliness, your cat's comfort, and even their willingness to use the litter box. A cat that doesn't like the litter available may simply refuse to use it – and that brings bigger problems.

In this article, we explain the different types of litter available, what distinguishes each one, and which might be most suitable for your situation.

The main types of cat litter

There are three main categories of cat litter on the market: bentonite (clay), plant-based, and silica. Each has very different characteristics.

Bentonite Litter (Clumping Clay)

This is the most common and widely used in Portugal. Bentonite is a type of natural clay that, when it comes into contact with liquids, forms compact clumps that are easy to remove with a scoop. This makes cleaning simpler and more efficient – you only remove what's soiled, without having to change all the litter as frequently.

Bentonite litters come in fine and coarser granules. Fine granules tend to be more comfortable for paws, especially for more sensitive cats, but can track more outside the litter box. Coarser granules stay more contained, but some cats prefer the finer texture.

Most bentonite litters have very high absorption capacity – some reach 300% or 400% of their weight. This means they last longer and are, over time, more economical than their initial price might suggest.

Plant-based Litter (Tofu, Wood, Pea, Corn, etc.)

Plant-based litters are made from organic materials such as soy fibre (tofu), wood, pea husk, or corn flour. They are biodegradable, lighter, and generally produce less dust. Some cats prefer the softer, slightly different texture of these litters.

The main advantage is the reduced environmental impact. The main disadvantage is that, in general, they have less absorption capacity than bentonite and may last less, depending on use.

Some tofu litters can be flushed down the toilet, which many owners find very convenient – but always check the manufacturer's instructions before doing so.

Silica Litter

Made from silica gel crystals, it absorbs liquids very efficiently and has excellent odour control. It lasts much longer than other types, which can offset the higher price. It is lightweight and produces very little dust.

The disadvantage is that the crystals have a harder texture, which some cats do not tolerate well. It is not recommended for very young kittens. It also does not form clumps – solids are removed manually and the litter is stirred regularly until it is completely replaced.

Scented or unscented litter?

This is one of the most frequent questions. The short answer: most cats prefer unscented.

Cats have a very developed sense of smell – and what smells like "fresh lavender" to us can be uncomfortable or even repulsive to them. Many cats with litter box aversion improve when switched to unscented litter.

Scented litters are designed for the owner's comfort, not the cat's. If odour control is a priority, it is better to choose a litter with good absorption capacity and clean the box regularly, rather than trying to mask it with fragrances.

Our Customers' Top 5 Favourite Litters

Based on actual sales from our website, these are the litters cat owners choose most often.

1. Golden White Self-Clumping Cat Litter

The best-seller, no surprises there. Golden White is a fine, clumping bentonite litter, with a subtle lavender scent and odour-controlling granules. It is known for forming compact, easy-to-remove clumps. It is a balanced litter in terms of price, performance, and ease of use – hence its popularity.

2. Sanicat Classic Fragrance-Free Cat Litter

Sanicat Classic is an absorbent (non-clumping), fragrance-free litter made from 100% natural materials. It is a very popular choice among owners who prefer a simple, lightweight, and artificial-fragrance-free litter. It does not form clumps – it is replaced entirely regularly – and works well for cats that do not tolerate scented litters.

3. Golden Odour Self-Clumping Cat Litter

Very similar to Golden White, Golden Odour stands out for its biological odour neutralisation – with no added fragrance. It is one of the most absorbent litters on the market. It is an excellent option for those who want effective odour control without resorting to fragrances.

4. Sanicat Clumping Fragrance-Free Cat Litter

The clumping, fragrance-free version of Sanicat. Enriched with active oxygen power, it effectively eliminates odours without releasing dust and is gentle on paws. It combines the comfort of the fragrance-free version with the practicality of easily removable clumps. A good choice for sensitive cats.

5. Katysand Tofu Litter Natural Clumping Cat Litter

The only plant-based litter in the top 5, which says a lot about the growing popularity of tofu litters. Katysand is made from soy fibre, is biodegradable, produces very little dust, and has clumping capacity. It is a good option for owners who want a more sustainable alternative to traditional bentonite.

Frequently Asked Questions (FAQs)

What is the best litter for a cat that has never used a litter box before?

For cats without an established habit – such as young kittens or cats that have always lived outdoors – it is best to start with a fine-grained, unscented litter. The soft texture and absence of strong smells are more appealing and facilitate acceptance of the litter box.

My cat has stopped using the litter box. Could it be the litter's fault?

Yes, it is one of the most common causes. A change of litter, a litter with a new scent, or litter that should have been changed already can lead a cat to avoid the litter box. Try switching back to a neutral, unscented litter, keep the box clean more frequently, and see if the problem resolves. If it persists, consult a vet to rule out medical causes.

How often should I change the litter? It depends on the type of litter. For clumping litters, remove clumps daily and do a complete change every 2 to 4 weeks. For non-clumping absorbent litters, the box should be completely changed more frequently – generally every 1 to 2 weeks, depending on use. Silica litters last longer, typically 3 to 4 weeks per cat.

Can plant-based litter really be flushed down the toilet? Some tofu and plant-based litters are marketed as "flushable" – meaning they can be flushed down the toilet in small quantities. Always check the manufacturer's instructions and proceed with caution.

How much litter should I put in the box? The ideal is a layer of 5 to 8 centimetres. With less than that, the clumps reach the bottom and are harder to remove. With more than that, the cat may dig too much and scatter litter outside the box.