Cats dig in the litter box to bury their waste

The main reason your cat digs in the litter box is instinct to cover their waste. In the wild, cats bury their feces and urine to hide their scent from predators and other cats. This behavior protects them from danger and marks territory without advertising their presence. Even though your indoor cat is safe at home, this instinct remains hardwired into their brain after thousands of years of evolution.

Your cat is not being wasteful or difficult when they dig—they are following a survival behavior that kept their ancestors alive. The digging motion helps them move litter over the spot where they have gone to the bathroom. Some cats dig before they use the box, some dig after, and some do both. All of these patterns are normal.

Key Takeaways

  • Cats dig to bury their waste as an instinct inherited from wild ancestors, not because anything is wrong with the litter box.
  • Excessive digging can mean the litter box is too small, the litter is the wrong type, or the box is not clean enough for your cat's preference.
  • A litter box should be at least one and a half times the length of your cat's body so they have room to turn around and dig comfortably.
  • Clumping litter makes it easier for cats to bury waste because it holds together better than non-clumping types.
  • If your cat digs outside the box or in other spots around your home, it may signal a medical issue or stress that needs attention.

How much digging is normal

Most cats dig for 10 to 30 seconds before or after using the litter box. They may kick litter backward with their hind legs, use their front paws to pull litter forward, or do a combination of both. Some cats are more thorough diggers than others, and this variation is normal. A cat that spends a minute or two digging is still within the range of typical behavior.

You should pay attention if your cat suddenly starts digging much more than usual, or if they dig outside the litter box in other parts of your home. A sudden change in digging behavior can point to a problem with the box itself, a change in litter type, or sometimes a medical issue. If the digging is paired with other changes—like going to the bathroom outside the box, straining, or seeming uncomfortable—contact your veterinarian.

Litter box size and the digging problem

A litter box that is too small forces your cat into a cramped space where they cannot dig properly. Cats need room to turn around, squat, and move litter with their paws. The general rule is that the box should be at least one and a half times the length of your cat's body from nose to tail. A box that is 24 inches long works well for most adult cats, but larger cats may need a 30-inch storage container or similar.

When a box is too small, cats may dig frantically trying to find enough litter to cover their waste, or they may give up and go to the bathroom outside the box instead. If you have a large cat or multiple cats sharing one box, upgrading to a bigger container often reduces excessive digging. Some people use under-bed storage containers or large plastic bins with a hole cut in the side—these give cats much more space than standard litter boxes.

Litter type and texture preferences

The type of litter you use affects how easily your cat can dig and bury waste. Clumping litter holds together when wet, which makes it easier for cats to move and pile over their waste. Non-clumping litter is looser and may scatter more, making it harder for your cat to feel like they have successfully covered their spot. If your cat digs excessively, switching to a clumping formula may reduce the behavior.

Cats also have texture preferences. Some prefer fine, sand-like litter, while others like larger pellets or crystals. If you recently changed litter brands or types, your cat may dig more while adjusting to the new texture, or they may refuse to use the box altogether. When you need to switch litter, do it gradually by mixing the old and new types together over a week or two. This gives your cat time to get used to the change without stress.

Cleanliness and litter box maintenance

Cats are particular about cleanliness, and a dirty litter box can trigger excessive digging. If the box has clumps of old waste, wet litter, or a strong smell, your cat may dig frantically trying to find a clean spot. They may also dig more when trying to cover waste in a box that already smells strongly of urine or feces. Scooping the box once or twice daily removes waste before it builds up and keeps the litter fresher.

Beyond daily scooping, completely empty and wash the litter box once a week. Use warm water and mild soap—avoid strong cleaners with ammonia or bleach, which can irritate your cat's nose and discourage box use. Refill with fresh litter after washing. Some cats are so sensitive to cleanliness that they will dig less once you establish a routine of frequent scooping and weekly deep cleaning.

When digging signals stress or a medical problem

If your cat is digging outside the litter box, in houseplants, in carpet, or in other spots around your home, the behavior usually means something is wrong. Cats may dig in inappropriate places when they are stressed, anxious, or trying to find a litter box that feels safer or cleaner to them. Changes in your home—a new pet, a move, loud noises, or a change in routine—can trigger this behavior.

Digging paired with straining, frequent trips to the box, or going to the bathroom outside the box can signal a urinary tract infection, digestive issue, or other medical problem. If your cat's digging behavior changes suddenly or is accompanied by other signs of illness, schedule a veterinary visit. Your veterinarian can rule out medical causes and help you figure out whether the behavior is stress-related or tied to the litter box setup.

Multiple cats and competition for the box

When you have more than one cat, they may dig more intensely because they are competing for space or trying to mark territory. A cat that feels rushed or threatened by another cat may dig frantically to cover their waste quickly. The general rule is to have one litter box per cat, plus one extra. So a household with two cats should have three boxes, ideally placed in different locations.

If boxes are too close together, cats may not feel they have separate, safe spaces to use the bathroom. Spreading boxes throughout your home gives each cat options and reduces the stress that can lead to excessive digging or going to the bathroom outside the box. Larger boxes also help because they give multiple cats room to use the same box without feeling crowded or threatened.

Frequently Asked Questions

Is it bad if my cat digs a lot in the litter box?

Normal digging is not bad—it is instinctive behavior. However, excessive digging can mean the box is too small, the litter type is wrong, or the box is not clean enough. If digging is paired with going to the bathroom outside the box or signs of discomfort, talk to your veterinarian.

Why does my cat dig before using the litter box?

Digging before use is normal behavior. Your cat is preparing the spot, testing the litter, and getting ready to bury their waste. Some cats dig before, some after, and some both—all patterns are typical.

Can I stop my cat from digging in the litter box?

You should not try to stop normal digging—it is a natural behavior. If digging is excessive, address the underlying cause: upgrade the box size, switch litter types, scoop more often, or add more boxes if you have multiple cats.

What if my cat digs in the litter box but nothing comes out?

If your cat goes through the motions of digging without producing waste, they may be constipated, have a urinary issue, or be marking territory. This behavior warrants a veterinary visit to rule out medical problems.

Does the depth of litter matter for digging?

Yes. Most cats prefer 2 to 3 inches of litter, which gives them enough material to dig and bury waste without hitting the bottom of the box. Too little litter makes digging difficult; too much can be wasteful and uncomfortable.