Cats scratch the litter box to bury their waste and cover their scent

When a cat digs and scratches around the litter box before and after using it, they are following an instinct that kept them safe in the wild. Burying urine and feces hides their location from predators and competitors. A cat that does not bury waste is a cat that signals "I am here" to anything that might hunt them. Even though your indoor cat has no real predators, the drive to cover their tracks remains hardwired.

The scratching also serves a second purpose: it spreads their scent glands from their paws across the litter and the box itself. Cats have scent glands between their toe pads, and when they scratch, they mark territory. This is why a cat will often scratch the walls or floor around the box as well as the litter itself — they are claiming that space as theirs and signaling to other cats that this is their bathroom.

Key Takeaways

  • Scratching in the litter box is normal behavior that helps cats bury waste and hide their scent from potential threats.
  • Cats also scratch to mark territory using scent glands in their paws, which is why they may scratch the box walls and surrounding floor.
  • Excessive scratching or digging can indicate the litter is too shallow, the box is too small, or the cat is stressed or anxious.
  • Providing deeper litter, a larger box, or a second box in a quieter location often reduces problem scratching.
  • Some cats scratch more when they are nervous or when the litter texture changes, so consistency matters.

How much scratching is normal

A cat that scratches for 10 to 30 seconds before and after using the box is doing what cats do. You will see them dig down, use the box, then cover everything up with quick, deliberate paw movements. This is efficient and purposeful — the cat knows what they are doing and stops when the job is done.

Excessive scratching looks different. The cat digs frantically, scatters litter across the floor, scratches the walls of the box or the surrounding area for minutes at a time, or seems agitated while doing it. If your cat is doing this, something in their environment or health is off. The behavior itself is not abnormal, but the intensity suggests a problem worth investigating.

Litter depth and box size matter more than most owners realize

Cats need enough litter to bury their waste completely. If the box holds only an inch or two of litter, the cat cannot dig deep enough to cover everything, so they keep scratching, trying to find more material. Most cats prefer 2 to 3 inches of litter. If you are using less, add more and watch whether the scratching decreases.

The box itself also needs to be large enough. A box that is too small forces the cat to crouch in an uncomfortable position, and they may scratch excessively as a sign of stress or because they cannot position themselves properly to bury waste. The box should be at least 1.5 times the length of your cat from nose to tail. If your cat is large or if you are using a standard litter box, consider upgrading to a larger model or a storage container modified as a litter box.

Litter type changes trigger more scratching

Cats are sensitive to texture and smell. If you switch from one litter brand or type to another, some cats will scratch more as they adjust — or refuse to use the box altogether. They may also scratch excessively because the new litter does not feel right under their paws or does not absorb odor the way they expect.

If you need to change litter, do it gradually. Mix the new litter with the old over a week or two, increasing the ratio of new to old each day. This gives your cat time to adjust without triggering stress-related scratching. If your cat has always used a particular type, stick with it unless there is a strong reason to switch.

Stress and anxiety show up as frantic scratching

A cat that is anxious, scared, or stressed may scratch the litter box intensely as a way to self-soothe or to mark territory more aggressively. Changes in the home — a new pet, a move, loud noises, or a change in routine — can trigger this behavior. The scratching is the cat's way of saying "this is my space and I need it to feel safe."

If your cat's scratching increased after a change in their environment, give them time to adjust. Provide a quiet, safe space away from the source of stress. Some cats also benefit from a second litter box in a different, quieter location. The American Feline Medical Association recommends one box per cat plus one extra, placed in different areas of the home. A stressed cat may avoid a box in a high-traffic area and use one in a quieter spot instead.

Medical issues can cause excessive scratching behavior

Parasites, skin infections, allergies, and digestive problems can all cause a cat to scratch more than usual. If a cat has fleas or mites, they may scratch everywhere, including the litter box. If a cat has diarrhea or constipation, they may scratch excessively because they are uncomfortable or because they are trying to bury waste that is not forming normally.

If the scratching is new, sudden, or accompanied by other changes — such as hair loss, skin redness, changes in appetite, or changes in bathroom habits — contact a veterinarian. Excessive scratching can be a sign that something physical is wrong, not just a behavioral quirk.

What you can do to reduce problem scratching

Start by checking the basics: litter depth (aim for 2 to 3 inches), box size (at least 1.5 times your cat's length), and box location (quiet, away from food and water). If the scratching is new, think about what changed — did you switch litter, move the box, add a new pet, or experience a change in routine?

If the box and litter are fine, add a second box in a different location. Some cats are particular about where they go, and a second option may reduce stress. Keep both boxes clean — scoop daily and change litter completely once a week. A dirty box can trigger excessive scratching as the cat tries to find a clean spot or bury waste in an already-soiled area.

If scratching continues and you have ruled out litter and box issues, watch for signs of stress or medical problems. A cat that scratches frantically, seems agitated, or has other behavioral changes may need a veterinary checkup or a quieter environment.

Frequently Asked Questions

Is it normal for a cat to scratch the litter box for a long time?

A few minutes of scratching before and after use is normal. If your cat scratches for longer than that or seems frantic, the litter may be too shallow, the box too small, or the cat stressed. Try adding more litter or providing a larger box first.

Why does my cat scratch outside the litter box?

Cats scratch around the box to mark territory with scent glands in their paws. This is normal. If the scratching is excessive or damaging, the cat may be stressed, the box may be too small, or there may not be enough boxes for the number of cats in the home.

Can litter type cause excessive scratching?

Yes. Cats are sensitive to texture and smell. If you recently switched litter, your cat may scratch more while adjusting or may reject the new type entirely. Switch gradually by mixing old and new litter over a week or two.

Should I be worried if my cat scratches the litter box constantly?

Constant, frantic scratching is not normal and suggests a problem. Check litter depth and box size first. If those are fine, consider stress, a second box in a quieter location, or a veterinary checkup to rule out parasites or digestive issues.

Does scratching the litter box mean my cat is sick?

Not always, but excessive scratching can be a sign of fleas, skin infections, digestive problems, or anxiety. If the behavior is new or accompanied by other changes like hair loss, appetite changes, or diarrhea, contact a veterinarian.