Start with the basics: box placement, cleanliness, and size
Most cats will use a litter box naturally, but they stop when something about the setup bothers them. The three most common reasons are location, cleanliness, or a box that feels too small or cramped. A cat needs to feel safe while using the box—that means placing it away from their food and water bowls, in a quiet corner where they won't be startled, and away from noisy appliances like washing machines or furnaces.
Clean the box daily by scooping out clumps and waste. Cats are particular about hygiene and will avoid a dirty box. Wash the entire box with mild soap and water once a week, and replace litter completely every two to three weeks depending on how many cats you have. The box itself should be large enough that your cat can turn around comfortably—a good rule is one-and-a-half times your cat's body length.
If you have multiple cats, the standard is one box per cat plus one extra. A single box shared by two or three cats creates competition and stress, and a stressed cat will find somewhere else to go.
Key Takeaways
- Place the litter box in a quiet, low-traffic area away from food, water, and loud appliances so your cat feels safe using it.
- Scoop daily and do a full litter change every two to three weeks—cats avoid dirty boxes and will eliminate elsewhere if the box is not clean.
- Use a box that is large enough for your cat to turn around in, and provide one box per cat plus one extra if you have multiple cats.
- If your cat is avoiding the box, rule out medical issues like urinary tract infections or digestive problems by visiting a veterinarian before assuming it is a behavioral problem.
- Kittens and newly adopted cats may need a few days to find and learn to use the box—place them in the box after meals and naps to build the habit.
Choose the right litter type for your cat
Cats have preferences about litter texture, and the wrong type can cause them to reject the box. Most cats prefer fine-grained, clumping litter that feels like sand. If your cat is avoiding the box, try switching brands or textures—some cats prefer non-clumping litter, crystal litter, or paper-based litter instead.
Scented litter can actually drive cats away because their sense of smell is much stronger than ours. If you are using heavily perfumed litter, switch to unscented. You can control odor through daily scooping and frequent litter changes rather than relying on fragrance.
Litter depth matters too. Most cats prefer about two to three inches of litter so they can dig and bury their waste comfortably. Too little and they feel exposed; too much and they may go outside the box.
Retrain a cat that has stopped using the box
If your cat has been using the box but suddenly stops, the first step is a veterinary checkup. Urinary tract infections, digestive issues, arthritis, and other medical problems can make a cat avoid the box. Once a vet rules out health issues, you can address behavioral causes.
Confine your cat to a smaller space—a bathroom or bedroom—with the litter box, food, water, and a bed. This forces proximity to the box and makes it easier to catch your cat using it successfully, which you can then reward with praise or a small treat. Once your cat is using the box reliably in the confined space for at least a week, gradually expand their access to the rest of the house.
If your cat has had accidents outside the box, clean those spots thoroughly with an enzymatic cleaner designed for pet urine. Regular cleaners do not break down the scent markers that tell your cat "this is a bathroom spot," so they will return to the same place. Enzymatic cleaners eliminate the odor completely.
Address stress and anxiety that may cause avoidance
Changes in the home—a new pet, a move, construction noise, or a change in routine—can stress a cat enough to stop using the box. Cats are creatures of habit, and disruption makes them anxious. If something has changed recently, give your cat time to adjust and make sure the litter box setup remains exactly the same.
If one cat is bullying another away from the box, place boxes in separate areas so the anxious cat has a safe route to one. Cats need to feel they can access the box without confrontation. In multi-cat homes, watch for signs of tension and consider adding a second or third box in different locations.
Some cats respond well to calming products like Feliway, a synthetic pheromone spray that mimics the natural scent cats produce when they rub their face on objects. Spraying it near the litter box can make the area feel safer and more familiar. Talk to your vet about whether this might help your situation.
Use positive reinforcement, not punishment
Never punish a cat for accidents outside the box—yelling, rubbing their nose in it, or swatting will only increase anxiety and make the problem worse. Cats do not connect punishment to their action the way dogs do, and punishment teaches them to hide when they eliminate, not to use the box.
Instead, reward your cat when you see them using the box. Praise them, offer a treat, or give them attention when ready after they finish. This builds a positive association with the box. Over time, your cat learns that using the box leads to good things.
If you catch your cat in the act of going outside the box, gently place them in the box without drama. Do not make it a confrontation. If they finish in the box, reward them. If they do not, straightforward clean up the accident and move on.
Consider box style and litter box covers
Open boxes work for most cats, but some prefer covered boxes for privacy. Others find covers claustrophobic or dislike the reduced air circulation. If your cat is avoiding a covered box, try removing the cover or switching to an open style. You can always test both to see which your cat prefers.
Automatic or self-cleaning boxes can be helpful if you struggle with daily scooping, but they are not necessary and some cats are frightened by the noise or motion. A standard box with daily scooping is usually more reliable. If you do use an automatic box, keep a regular backup box available in case your cat is startled by it.
Corner boxes and boxes with high sides can help contain litter scatter if your cat kicks litter out during digging. However, make sure the sides are not so high that older cats or kittens have trouble climbing in.
When to call a veterinarian
If your cat suddenly stops using the box or begins eliminating outside it frequently, schedule a vet visit before trying behavioral fixes. Urinary tract infections, kidney disease, diabetes, inflammatory bowel disease, and other conditions can all cause litter box avoidance. A vet can run tests and rule out medical causes, which is essential because treating the underlying illness will often solve the box problem when ready.
Older cats may develop arthritis that makes it painful to climb into a box with high sides, or they may need a box on each floor of your home to avoid long walks. A vet can assess your cat's mobility and recommend adjustments. Similarly, if your cat has diarrhea or constipation, a vet can identify the cause and treat it, which will restore normal box use.
Frequently Asked Questions
How long does it take a kitten to learn to use the litter box?
Most kittens instinctively use a litter box by eight weeks old, but newly adopted kittens may need a few days to locate and trust the box in a new home. Place the kitten in the box after meals, naps, and playtime—these are when they are most likely to need to eliminate. Praise and reward them when they use it successfully.
Why is my cat using the litter box but also going outside it?
This usually means the box is too small, too dirty, or in a location that feels unsafe. It can also indicate a medical issue like diarrhea or a urinary problem. Start by increasing box size, cleaning more frequently, and checking with a vet. If you have multiple cats, add an extra box in a different location.
Can I move the litter box to a different room?
Cats can adjust to a new box location, but move it gradually—shift it a few feet every day over a week or two rather than moving it across the house overnight. If you must move it quickly, place a second box in the old location temporarily so your cat can find it while learning the new spot.
What should I do if my cat has been using the box for years but suddenly stops?
A sudden change almost always signals a medical problem. Schedule a vet visit when ready to rule out urinary tract infections, kidney issues, or digestive problems. Once medical causes are ruled out, check whether anything in the home has changed—a new pet, moved furniture, or a change in routine—and restore the cat's sense of safety and routine.
Is it normal for cats to kick litter out of the box?
Yes, cats dig and scatter litter naturally. You can reduce scatter by using a box with higher sides, placing a mat underneath to catch stray litter, or using a litter box with a lid and entrance hole. However, some scatter is normal and not a sign of a problem.