The best rabbit litter is paper-based, pellet, or aspen shavings—never clay cat litter or cedar

Rabbits naturally use one corner of their space as a toilet, so a litter box filled with the right material makes cleanup easier and keeps your rabbit's living area cleaner. The material you choose matters because rabbits have sensitive respiratory systems and delicate paws. Clay-based cat litter, cedar, and pine all release dust or oils that can harm a rabbit's lungs, so those are off the table entirely.

The safest options are paper-based litter (made from recycled paper), wood pellets (kiln-dried aspen or pine), or paper pellets. All three absorb urine well, control odor, and are safe if your rabbit nibbles them. Paper-based litter is the gentlest on paws and lungs. Pellets are more absorbent and last longer between changes. Your choice depends on your budget, how often you want to change the box, and what your rabbit seems to prefer—some rabbits have strong opinions about texture.

Key Takeaways

  • Paper-based litter, aspen pellets, and paper pellets are all safe for rabbits; clay cat litter, cedar, and pine are toxic and should never be used.
  • Paper-based litter is softest on paws and lungs, while pellets absorb more urine and need changing less often.
  • Fill the box 2 to 3 inches deep so urine soaks through to the bottom and your rabbit can dig without scattering litter everywhere.
  • Add a layer of hay on top of the litter—rabbits eat while they toilet, and this mimics their natural behavior.
  • Change the box completely once or twice a week, depending on how many rabbits you have and how absorbent your litter is.

Paper-based litter: the gentlest choice

Paper-based litter is made from shredded or pelletized recycled paper and is the safest option for a rabbit's respiratory system. It produces almost no dust, so it won't irritate your rabbit's nose or lungs even if they burrow in it. The texture is soft on their sensitive paws, and it's safe if they eat a small amount while digging.

Paper litter absorbs moisture well but not as aggressively as pellets, so you'll need to change the box more often—usually twice a week for a single rabbit. It's also bulkier to store and dispose of than pellets. Common brands include Yesterday's News (originally made for rabbits) and Carefresh. If your rabbit has respiratory issues or very sensitive skin, paper-based litter is the best choice.

Aspen and pine pellets: longer-lasting absorption

Kiln-dried aspen and pine pellets are compressed wood shavings that absorb urine much more effectively than paper litter. A box of pellets lasts longer between changes, and they control odor better, making them a practical choice if you have multiple rabbits or want to clean less frequently. Pellets are also cheaper per pound than paper litter.

The downside is that pellets are harder on paws than paper—some rabbits dislike standing on them. They also break down into dust and small fragments as your rabbit digs, which can irritate lungs if there's a lot of dust. If you choose pellets, look specifically for kiln-dried aspen or pine; avoid cedar and untreated pine, which release oils harmful to rabbits. Pine pellets sold for horse bedding or small animal bedding are usually safe, but check the label to confirm they're kiln-dried.

Paper pellets: a middle ground

Paper pellets combine some benefits of both paper litter and wood pellets. They're made from compressed recycled paper, so they're safer for lungs than wood pellets, but they absorb urine more efficiently than loose paper litter. They're also easier to dispose of than loose paper and less dusty than wood pellets when your rabbit digs.

Paper pellets cost more than aspen pellets but less than loose paper litter. They work well for rabbits that dislike the texture of wood pellets or for owners who want a balance between absorbency and respiratory safety. Brands like Feline Pine (despite the name, made from pine pellets) and paper-based pellet litters are available at most pet stores.

How deep to fill the box and what to add on top

Fill your litter box 2 to 3 inches deep with whichever litter you choose. This depth allows urine to soak through to the bottom so you can see when the box needs changing, while still giving your rabbit enough material to dig and burrow in without scattering litter across the floor.

Add a layer of hay on top of the litter—about 2 inches. Rabbits naturally eat while they toilet, so this mimics their instinctive behavior and encourages them to use the box consistently. The hay also helps absorb moisture and keeps the box smelling fresher longer. Use the same hay you feed your rabbit so they're not tempted to eat the litter instead.

What to avoid: materials that harm rabbits

Clay-based cat litter is toxic to rabbits. It produces fine dust that damages their lungs, and if they ingest it while grooming their paws, it can cause intestinal blockages. Never use any clumping litter designed for cats.

Cedar and untreated pine release aromatic oils called phenols that are poisonous to rabbits and can cause liver damage. Even small amounts are unsafe. Some cedar and pine products are labeled as "safe for small animals," but rabbits are more sensitive than hamsters or gerbils, so avoid them entirely.

Sawdust and wood shavings (other than kiln-dried aspen) are dusty and can splinter, irritating paws and lungs. Avoid any bedding that smells strongly of wood or has a strong odor when you open the bag.

How often to change the litter box

Change the litter box completely once or twice a week, depending on the absorbency of your litter and how many rabbits share the box. Paper-based litter usually needs changing twice a week for one rabbit. Pellets can often go a full week if you have just one rabbit, but two rabbits will fill a box faster.

Spot-clean the box daily by removing wet litter and clumps of hay. This keeps odor down and makes your rabbit more likely to keep using the box. If the box starts to smell strongly of ammonia, change it sooner—ammonia irritates respiratory systems and signals that urine is sitting too long.

Frequently Asked Questions

Can I use regular cat litter in a rabbit box?

No. Clay cat litter, including clumping varieties, is toxic to rabbits. It produces dust that damages their lungs and can cause intestinal blockages if ingested. Stick to paper-based litter, aspen pellets, or paper pellets instead.

What if my rabbit won't use the litter box?

Try a different litter material—some rabbits dislike the texture of pellets or prefer the softness of paper. Make sure the box is large enough (at least 12 by 18 inches for a medium rabbit), placed in the corner where your rabbit naturally toilets, and filled with hay on top. If your rabbit suddenly stops using the box after using it regularly, contact a veterinarian to rule out urinary tract infection or other health issues.

Is it safe if my rabbit eats the litter?

Small amounts of paper-based litter or aspen pellets are safe if ingested. Rabbits often nibble while digging. However, if your rabbit is eating large amounts of litter instead of hay, it may indicate boredom or a nutritional imbalance—talk to your veterinarian about diet and enrichment.

How much litter should I buy at once?

For one rabbit, a 10-pound bag of pellets usually lasts two to three weeks. Paper litter is bulkier, so a similar bag lasts about one week. Buy based on your storage space and how often you're willing to restock. Buying in bulk saves money if you have room to store it.

Can I compost rabbit litter?

Paper-based litter and aspen pellets can be composted, though the hay and urine will break down faster than the litter itself. Check your local composting guidelines—some programs don't accept pet waste. Pellets take longer to decompose than loose paper litter, so shred them first if you're composting.