Why cats stop using the litter box and how to fix it
A cat that has stopped using the litter box is usually telling you something is wrong—either with the box itself, the litter, their health, or their stress level. The good news is that retraining works in most cases because cats naturally want to bury their waste. Your job is to figure out what broke the habit, fix that problem, and then rebuild the routine step by step.
The most common reasons are a dirty box, a box in the wrong location, a change in litter type or brand, a medical issue like a urinary tract infection, or stress from a move, new pet, or household change. Start by ruling out health problems—a vet visit is worth it before you assume it is a behavioral issue.
Key Takeaways
- A vet should rule out urinary tract infections and other medical problems before you begin retraining, because pain or illness is the most common cause.
- Clean the box daily, use unscented litter, and place it in a quiet, accessible location away from food and water bowls.
- Confine your cat to a small space with the litter box for a few days so they cannot avoid it, then gradually expand their territory as they use it consistently.
- Never punish accidents—clean them with enzymatic cleaner to remove the scent, or your cat will keep returning to that spot.
- If your cat uses the box sometimes but not always, add a second box in a different location, because some cats prefer separate areas for urine and stool.
Rule out medical problems first
Before you change anything about the litter box setup, take your cat to a veterinarian. Urinary tract infections, kidney disease, diabetes, and digestive issues all cause cats to avoid the box or use it inconsistently. A vet can run a urinalysis and check for these problems in a single visit.
If your cat is straining, crying in the box, or producing very little urine, this is urgent—these are signs of a blocked urinary tract, which is a medical emergency in male cats. Do not wait to see if retraining helps; go to a vet or emergency clinic the same day.
Clean the box daily and use the right litter
A dirty litter box is the single most common reason cats stop using it. Scoop out clumps and solid waste every day, and wash the box itself with hot water and mild soap once a week. Do not use bleach or strong-smelling cleaners, because the smell can drive cats away.
If you recently switched litter brands or types, switch back. Cats are particular about texture and smell. If you need to change brands, do it gradually over a week by mixing the old litter with the new, increasing the new litter a little each day. Use unscented, clumping litter unless your cat has always used a different type—stick with what worked before.
Fill the box with 2 to 3 inches of litter. Too little and cats feel like they are not burying waste properly; too much wastes litter and makes the box harder to keep clean.
Move the box to the right location
The litter box should be in a quiet, low-traffic area away from your cat's food and water bowls. Cats do not like to eliminate near where they eat. If the box is in a noisy laundry room or next to a furnace that turns on suddenly, your cat may avoid it out of stress or fear.
If you recently moved the box, move it back to where it was before, or move it only a few feet at a time over several days. A sudden location change can confuse a cat enough to break the habit. If the old location is truly not workable, place a second box in the old spot while you transition the cat to the new one.
Make sure the box is straightforward to reach. If your cat is older or has mobility problems, a box on a different floor or in a hard-to-access corner will not work. Older cats especially need boxes on every level of the house.
Confine your cat and rebuild the habit
Once you have ruled out health problems and fixed the box setup, use confinement to rebuild the habit. Choose a small room—a bathroom or bedroom works well—and put your cat in it with the litter box, food, water, and a bed or hiding spot. Keep your cat confined for 3 to 5 days, or until they use the box consistently.
During this time, watch for your cat to use the box. When they do, praise them quietly and give a small treat. This reinforces the behavior without startling them. Do not hover or stare; just notice and reward.
After your cat has used the box reliably for several days, open the door and let them explore one room at a time. If they have an accident, confine them again for another few days. Expand their space only when they are using the box every time.
Clean accidents with enzymatic cleaner
If your cat has had accidents outside the box, the smell is still there even if you cannot detect it. Cats will return to spots where they smell their own urine or stool. Use an enzymatic cleaner—brands like Nature's Miracle or Rocco & Roxie are made specifically to break down urine and feces at the molecular level, not just mask the smell.
Soak the spot thoroughly with enzymatic cleaner, let it sit for the time the label recommends (usually 10 to 15 minutes), and then blot it up. Do not use vinegar, ammonia, or bleach first, because these can react with the enzymatic cleaner and reduce its effectiveness. If the accident soaked into carpet or wood, you may need to treat it multiple times.
Never punish your cat for accidents by yelling, hitting, or rubbing their nose in it. Punishment teaches them to hide when they eliminate, not to use the box. It also increases stress, which makes the problem worse.
Add a second box if your cat uses it inconsistently
Some cats prefer to urinate in one box and defecate in another. If your cat is using the box sometimes but not always, add a second box in a different location—ideally on a different floor or in a different room. The rule of thumb is one box per cat, plus one extra, so a single cat should have two boxes.
Place the second box far from the first one, not right next to it. If your cat still has accidents in a particular room or corner, put a box there temporarily. Once the habit is rebuilt, you can move it back to a more convenient location.
Address stress and environmental changes
A move, a new pet, a new person in the house, or even rearranged furniture can stress a cat enough to break litter box habits. If something changed recently in your household, that is likely the cause. Reduce stress by keeping your cat's routine as stable as possible: same feeding times, same play schedule, same quiet space to retreat to.
If you have added a new pet, keep them separated for a while so your original cat does not feel threatened. Let them get used to each other's scent under the door before they meet face to face. Make sure each cat has their own litter box, food bowl, and water bowl.
Pheromone sprays like Feliway can help calm an anxious cat. Spray it near the litter box and in areas where your cat spends time. These products mimic the natural calming pheromones cats produce, and they are safe and odorless to humans.
Frequently Asked Questions
How long does it take to retrain a cat to use the litter box?
Most cats return to consistent box use within 2 to 4 weeks once the underlying problem is fixed and the confinement routine is in place. Some take longer, especially if the problem has been going on for months. Patience and consistency matter more than speed.
What if my cat uses the box but also has accidents in the same spot?
That spot still smells like urine to your cat even if you cannot smell it. Clean it thoroughly with enzymatic cleaner, then block your cat's access to that area for a few weeks if possible. Once the habit is rebuilt, you can gradually allow access again.
Should I get a bigger litter box?
Yes, if your cat is large or if they seem cramped. The box should be at least 1.5 times the length of your cat's body. A box that is too small can make cats feel trapped or uncomfortable, especially if they are trying to turn around to cover their waste.
Can I use a covered litter box?
Some cats prefer covered boxes for privacy, but others feel trapped or dislike the smell buildup inside. If your cat stopped using a covered box, try removing the cover. If they never had one, start with an open box during retraining, then add a cover later if they seem comfortable.
What if my cat still will not use the box after several weeks?
Go back to the vet to rule out a medical problem you might have missed the first time. If health is ruled out, ask your vet for a referral to a veterinary behaviorist, who can assess your specific cat and situation. Some cats need medication to reduce anxiety while you rebuild the habit.