Biodegradable & Flushable Cat Litter

While there is an array of cat litter options, ranging from silica cat litter to more traditional clay cat litter, only a select few varieties, usually non-clumping litters, are suitable for flushing. It’s always best to check the packaging. Check the list below to get an overview of the most popular flushable options:

• Corn cat litter: Plant-based option made from renewable, biodegradable corn. Often low in dust and chosen by owners looking for a natural clumping litter.
• Soy: A natural alternative made from soy by-products, biodegradable, and sometimes marketed as flushable, though suitability depends on local waste disposal guidance.
• Grass/Hay: Made from dried grasses or hay fibres, offering a biodegradable option with natural odour control. Flushability varies, so always check product recommendations.

Not all products labelled as “flushable cat litter” behave the same way. Even biodegradable litter may still clump when wet and fail to break down quickly in sewage systems. This can lead to clogs, pipe damage, or problems for septic tanks. In addition, some regions prohibit flushing any type of cat litter, so it’s always best to check your local rules before you flush.

Zooplus stocks a variety of natural cat litter options that are biodegradable. Some, like corn, soy, or hay, may also be advertised as flushable. Others, while biodegradable, are not intended for toilet disposal:

• Cellulose litter: Made from recycled paper or plant fibres. Lightweight, biodegradable, and occasionally suitable for flushing depending on the blend.
• Wood pellet litter: Made from compressed wood fibres with strong absorbency and a natural scent. Biodegradable, but generally not flushable.

Did you know? Cat litter made from reclaimed wood or pine sawdust is considered one of the most biodegradable options. It’s lightweight and offers natural odour control through wood’s absorbent properties.

The safest method is usually placing biodegradable cat litter into your general waste bin, ideally in a biodegradable bag. Some councils may allow garden composting for litter made purely from plant materials, but always confirm with your local waste services.

Natural cat litters are often chosen by environmentally conscious owners. Many are made from renewable or recycled materials, which may reduce landfill waste and break down more naturally than clay-based litters. Another advantage is that some types create less dust, which can be useful in multi-cat or indoor households.

Most biodegradable cat litter should be changed at least once a week, though this depends on the type of litter and the number of cats in your home. Non-clumping natural litters, such as those made from paper or wood, may need to be replaced more frequently to stay fresh.