Most cats instinctively use a litter box with minimal training
Cats are naturally drawn to loose, granular material for burying waste, which is why litter boxes work so well. Most kittens learn to use one straightforward by being placed in it a few times—their instinct does most of the work. Adult cats, even those who have never seen a litter box, usually catch on within days. The real challenge is not teaching the behavior itself, but placing the box where your cat will find it and keeping it clean enough that your cat wants to use it.
If your cat is not using the box, the problem is almost always one of three things: the box is in the wrong location, it is not clean enough, or there is a medical issue. This guide covers how to set up the conditions for success and what to do when a cat refuses to use the box despite having access to it.
Key Takeaways
- Place the litter box in a quiet, accessible location away from food and water bowls, ideally in a room your cat can reach at all times.
- Scoop waste daily and do a full litter change weekly; cats often refuse boxes that smell or feel dirty.
- Put a new kitten or unfamiliar cat in the box when ready after eating, drinking, playing, or waking up, when they are most likely to need it.
- If an adult cat stops using the box suddenly, see a veterinarian first to rule out urinary tract infections or other medical problems.
- Multiple cats need multiple boxes—the rule is one box per cat plus one extra, placed in different locations.
Where to place the litter box for best results
Location is the single biggest factor in whether a cat will use the box consistently. The box should be in a quiet, low-traffic area where your cat can reach it without passing through the main living space. A bathroom corner, laundry room, or spare bedroom works well. Avoid placing it near the kitchen or dining area—cats do not like to eliminate near where they eat.
The box also needs to be accessible at all times. If you close a door and your cat cannot reach the box, they will go elsewhere. For kittens or newly adopted cats, place the box in the room where they spend most of their time at first, then gradually move it to your preferred location once they are reliably using it. Move it only a few feet per day so your cat can follow the change.
If you have multiple cats, place boxes in different locations—ideally on different floors or in different rooms. Cats will not share a single box if they have to wait, and a dominant cat may block access to the only box, forcing others to go outside it.
How to introduce a kitten or new cat to the litter box
When you bring a kitten or adult cat home, place them directly in the litter box within the first few minutes. Do this gently—do not force them in, just set them down in it. Most kittens will sniff it and understand when ready. If the kitten does use it right away, praise them quietly and leave the room so they do not feel watched.
For the first week, place your kitten in the box at predictable times: right after meals, after naps, after playtime, and before bedtime. These are the moments when cats naturally need to go. If you see your kitten sniffing the ground or circling, pick them up gently and place them in the box. Again, praise quietly if they use it.
Adult cats who have never used a litter box before will usually figure it out on their own within a few days, especially if they are hungry or thirsty—they will seek out the box once they need it. If an adult cat seems confused, use the same approach: place them in the box several times a day at natural times, and let instinct take over.
Keeping the litter box clean so your cat will use it
Cats are fastidious and will avoid a dirty box. Scoop out clumps and solid waste daily, ideally once in the morning and once in the evening. Remove wet clumps as soon as you notice them. A box that smells strongly of ammonia or has visible waste will be rejected, even by a cat who has been using it reliably.
Do a full litter change—dump all the litter and wash the box—once a week or every two weeks, depending on how many cats use it and what type of litter you use. When you refill, use the same brand and type of litter your cat is used to. Switching litter suddenly can confuse a cat or make them reluctant to use the box.
If you have multiple cats, you may need to scoop more frequently. A box that is adequate for one cat may feel crowded or dirty to a second cat, leading them to go outside the box instead.
What to do if your cat stops using the litter box
If a cat who was reliably using the box suddenly stops, the first step is a veterinary visit. Urinary tract infections, kidney disease, diabetes, and digestive problems all cause cats to avoid the box or go outside it. A veterinarian can rule out medical causes with a straightforward exam and urine test. Do not assume it is a behavior problem until a medical issue has been ruled out.
Once medical problems are off the table, check the basics: Is the box clean? Has anything changed about its location, the litter type, or the number of boxes? Has a new pet or person moved in? Cats are sensitive to change. If you recently moved the box, switched litter brands, or reduced the number of boxes, return to the previous setup and see if the problem resolves.
If your cat is going outside the box in a specific spot—always the same corner of the bedroom, for example—place a second litter box in that spot. Once your cat is using it consistently, you can gradually move it to a more convenient location, a few feet at a time.
Choosing the right litter box size and type
The box should be large enough for your cat to turn around and dig comfortably. A box that is too small will be avoided. For an adult cat, aim for a box that is at least 1.5 times the length of your cat's body. Kittens can start with a smaller box and graduate to a full-size one as they grow.
Most cats do well with a standard open box with 2 to 3 inches of litter. Some cats prefer covered boxes for privacy, while others find them confining and will avoid them. If your cat is not using a covered box, try an open one. You can always switch back later if the open box becomes inconvenient for you.
Avoid boxes with liners or deodorizers unless your cat is already using the box reliably. Some cats dislike the feel of liners or the smell of added scents and will refuse the box because of them. Stick with plain litter in a plain box until you know your cat's preferences.
Litter type and what cats prefer
Most cats prefer fine-grained, clumping litter that feels like sand or soil. Clay-based clumping litter is the most common and works well for most cats. Some cats have preferences—a few prefer non-clumping litter, while others like crystal or paper-based litters—but you will not know until you try.
If you need to switch litter types, do it gradually. Mix the new litter with the old over the course of a week, increasing the proportion of new litter each day. A sudden switch can confuse your cat or make them avoid the box. If your cat refuses the new litter after a gradual transition, go back to the original type.
Avoid heavily scented litters unless your cat is already using the box reliably. Many cats dislike strong smells and will avoid a scented box. Unscented litter is usually the safest choice, especially for kittens or cats new to litter boxes.
Frequently Asked Questions
How long does it take to litter train a kitten?
Most kittens understand the concept within a few days to a week. By 8 to 12 weeks old, a kitten should be using the box consistently if it is clean and accessible. If a kitten is still having accidents after two weeks, check that the box is in the right location and is being scooped daily.
What if my cat is peeing outside the box but pooping in it?
This usually means the box is too small or too dirty for your cat's comfort. Try a larger box, scoop more frequently, or add a second box in a different location. If the problem persists after a week, see a veterinarian to rule out a urinary tract infection.
Can I use a regular storage container as a litter box?
Yes. Many people use large plastic storage bins with one side cut out to create a low-cost litter box. Cut the opening low enough that your cat can step in easily, and fill it with 2 to 3 inches of litter. This works especially well for cats who prefer larger boxes.
Do I need to punish my cat for accidents outside the box?
No. Punishment teaches a cat to hide accidents, not to use the box. If you find an accident, clean it thoroughly with an enzymatic cleaner to remove the scent, then review the box location, cleanliness, and size. The problem is almost always environmental, not behavioral.
How many litter boxes do I need for two cats?
You need three boxes—one per cat plus one extra. Place them in different locations so both cats have access without having to wait or compete. If one cat is blocking access to a box, adding more boxes in separate areas usually solves the problem.