You may find urine on the floor, faeces beside the tray, or evidence that your cat is choosing another part of the house. It is tempting to assume the cat is being difficult or needs better training.
Usually, that is not the best place to start.
A sudden change in toileting behaviour can happen because something about the litter tray has become unpleasant, because your cat feels stressed, or because there is an underlying health problem.
The first step is to look at the situation calmly.
Do not punish your cat, shout, or force them into the tray. Instead, check the tray, consider recent changes, watch your cat’s behaviour, and pay attention to signs that could require veterinary attention.
First, Check Whether Your Cat Is Struggling to Urinate
This is the most important check.
If your cat is repeatedly entering the litter tray, straining, crying, producing only tiny amounts of urine, licking the genital area excessively, or repeatedly attempting to urinate without producing a normal amount, contact a veterinarian urgently.
A cat that cannot pass urine may have a serious urinary problem that requires immediate treatment.
Male cats are particularly vulnerable to potentially life-threatening urinary obstruction, but any cat showing signs of difficulty urinating needs prompt veterinary assessment.
Do not wait several days to see whether the problem resolves.
Watch What Your Cat Actually Does
Before changing everything, observe your cat.
Does your cat enter the tray and then leave quickly?
Does your cat scratch around the tray but not use it?
Does your cat urinate beside the tray?
Does your cat use the tray for faeces but not urine?
Does your cat choose one particular location?
Does your cat seem frightened when approaching the tray?
These details can help you work out whether the problem may involve the tray itself, the environment, or your cat’s health.
Check the Litter Tray Itself
Cats can be surprisingly particular about their toileting area.
A tray that seems perfectly acceptable to you may not feel comfortable to your cat.
Check whether the tray is clean, large enough, easy to enter, and positioned somewhere your cat feels safe.
Also consider whether something has recently changed.
Perhaps you changed the litter.
Maybe you moved the tray.
Perhaps you started using a scented cleaning product.
Or another pet has started spending time near the tray.
A small environmental change can sometimes make a cat avoid an area.
Clean the Tray Regularly
Cats generally prefer clean toileting areas.
Remove urine clumps and faeces regularly and keep the tray reasonably clean.
If several cats share a tray, it can become dirty quickly.
A dirty tray may encourage a cat to search for another place.
Avoid cleaning products with strong fragrances if your cat appears sensitive to smells.
Rinse the tray appropriately after cleaning and allow it to dry before adding fresh litter.
Consider the Number of Litter Trays
One tray may not be enough for a multi-cat household.
A commonly recommended approach is to provide enough trays for the number of cats plus one extra, although individual circumstances vary.
For example, a home with two cats may benefit from three trays in separate suitable locations.
This reduces competition and gives cats alternatives.
The trays do not necessarily need to be placed side by side. Spreading them through suitable areas can give cats more privacy and choice.
Check Whether Another Cat Is Blocking Access
A litter tray can become stressful if another cat guards the area.
Watch how your cats behave around the tray.
Does one cat stare at or chase another cat?
Does your cat avoid a particular room?
Does your cat hesitate before entering the area?
Even subtle tension can affect toileting behaviour.
In multi-cat homes, provide several toileting areas where cats can use the tray without feeling trapped.
Choose a Quiet Location
Cats usually prefer a place where they can toilet without being constantly disturbed.
Avoid placing the tray directly beside noisy appliances, busy walkways, or areas where people frequently pass.
A washing machine beginning its spin cycle may not seem important to you, but a sudden loud noise can make a cat uncomfortable.
Choose a location that is accessible but offers some privacy.
Make Sure the Tray Is Easy to Reach
A cat should not have to travel through a stressful or difficult area to reach its toilet.
This becomes particularly important for older cats or cats with mobility problems.
If the tray has high sides, consider whether your cat can comfortably step over them.
A cat that has developed joint pain may avoid a tray that was previously easy to enter.
If your cat is older or seems stiff, discuss suitable litter-tray arrangements with your veterinarian.
Think About the Size of the Tray
Some commercial trays are surprisingly small.
Your cat needs enough room to enter, turn around, dig, and position itself comfortably.
If your cat repeatedly urinates beside the tray rather than inside it, the tray may simply be too small.
A larger tray can give the cat more space.
In some cases, a large storage container with a suitable low entrance can work better than a small commercial litter tray, provided it is safe and easy for the cat to use.
Check the Type of Litter
Cats can develop strong preferences about litter texture and smell.
If you recently changed from one type of litter to another and the problem started soon afterwards, consider whether the change could be contributing.
Some cats prefer unscented litter.
Others may dislike heavily perfumed products.
If you want to change litter, making the transition gradually can be less disruptive than suddenly replacing the old litter.
Avoid Strongly Scented Products
Your cat’s sense of smell is highly developed.
A tray that smells pleasantly fresh to you may smell overwhelming to your cat.
Avoid strongly scented litter, air fresheners, perfumes, and harsh cleaning products around the toileting area if your cat is avoiding it.
A clean tray does not need to smell strongly of fragrance.
Consider Whether You Recently Moved the Tray
Cats often become accustomed to the location of their toilet.
Moving the tray to another room can cause confusion or reluctance.
If you need to relocate it, consider moving it gradually rather than making a sudden change.
If the tray has already been moved and your cat stopped using it afterwards, returning it to the previous location may help you determine whether the location is part of the problem.
Look for Recent Household Changes
Think about what happened around the time the behaviour changed.
Did you move furniture?
Have visitors arrived?
Did a new pet join the household?
Did another pet die?
Have there been building works or unusual noises?
Did you change your working routine?
Has someone in the household been away?
Cats can respond to changes in their environment.
Stress does not mean the problem is “just behavioural.” Stress can affect cats physically and can also interact with urinary or digestive problems.
Watch for Signs of Stress
A stressed cat may show changes beyond litter-tray behaviour.
You might notice more hiding, reduced interaction, changes in appetite, increased vocalisation, excessive grooming, or unusual behaviour around other animals.
Some cats become more withdrawn rather than obviously anxious.
If the litter problem appeared alongside other behavioural changes, make a note of them.
This information can help your veterinarian understand the bigger picture.
Clean Accidents Thoroughly
If your cat has urinated outside the tray, clean the area carefully.
Cats can return to places that still smell like urine.
Use an appropriate pet-safe cleaning product designed to remove urine odour.
Avoid products that contain ammonia when cleaning cat urine, because the smell can resemble urine and may encourage repeat marking or toileting in the same location.
Clean as soon as practical and allow the area to dry appropriately.
Do Not Punish Your Cat
Punishment will not teach your cat where you want them to toilet.
Shouting, hitting, pushing your cat toward the mess, or rubbing their nose near an accident can increase fear and stress.
It can also damage your relationship with your pet.
Your cat is showing you that something has changed.
The useful response is to find out why.
Distinguish Toileting From Spraying
Urination outside the tray does not always mean your cat has forgotten how to use the litter tray.
Some cats spray urine as a form of marking.
Spraying often involves a small amount of urine placed on a vertical surface while the cat stands with the tail raised.
Normal urination usually involves squatting and producing a larger amount on a horizontal surface.
Both behaviours can have different causes, and medical problems should still be considered when a cat suddenly changes its urine-related behaviour.
Consider Urinary Health
Urinary problems are an important reason to take sudden litter-tray changes seriously.
Cats can develop urinary conditions that cause discomfort or changes in urination.
A cat may begin associating the litter tray with pain and then avoid it.
You may notice frequent trips to the tray, straining, small urine amounts, blood in the urine, vocalisation, licking around the genital area, or accidents around the home.
These signs require veterinary attention.
Do not assume that a cat is simply being stubborn.
Pay Attention to Your Cat’s Water Intake
Notice whether your cat is drinking substantially more or less than usual.
Changes in drinking and urination can sometimes accompany health problems.
Do not attempt to diagnose the cause from drinking behaviour alone.
Instead, record what you notice and mention it to your veterinarian if the litter problem continues or other symptoms appear.
Check Your Cat’s Appetite and Energy
A sudden litter-tray change is more concerning when it occurs alongside other physical changes.
Watch for:
Reduced appetite
Vomiting
Diarrhoea
Unusual tiredness
Hiding
Weight changes
Increased thirst
Changes in grooming
Signs of pain
Changes in movement
These symptoms do not tell you exactly what is wrong, but they can help indicate that veterinary assessment is appropriate.
Older Cats May Need Different Toilet Arrangements
An older cat may have difficulty reaching or entering a tray because of reduced mobility.
Arthritis and other age-related problems can make jumping or climbing uncomfortable.
A tray with a lower entrance may be easier.
Place it somewhere your cat can reach without climbing stairs or travelling a long distance.
If you notice stiffness, difficulty jumping, changes in grooming, or other signs of discomfort, discuss them with your veterinarian.
Do Not Restrict Water
If your cat is urinating outside the tray, do not reduce access to water in an attempt to reduce accidents.
Cats need regular access to fresh water.
Restricting water can create additional health risks.
If you are concerned about changes in drinking or urination, speak with your veterinarian.
Keep Food and Litter Areas Separate
Cats generally prefer some separation between where they eat and where they toilet.
If the food bowl is directly beside the litter tray, consider moving one to a more suitable location.
Your cat should have a clean, comfortable place to eat and a separate place to toilet.
Introduce Changes Gradually
Cats often cope better with gradual changes.
If you want to change litter, introduce the new type slowly.
If you are moving a tray, move it a little at a time where practical.
If you are changing the room layout, give your cat time to adjust.
Sudden environmental changes can add unnecessary stress.
Consider Your Cat’s Personality
Some cats tolerate changes easily.
Others are highly sensitive to small differences in their surroundings.
Think about how your cat normally responds to visitors, furniture changes, noise, new smells, and other animals.
If your cat is particularly cautious, give them quiet places where they can retreat and make sure their basic resources are easy to access.
Keep a Simple Record
If the problem lasts more than a short period, start recording what happens.
Note:
When the problem started
Whether your cat urinates or defecates outside the tray
Where accidents occur
How often your cat visits the tray
Whether urine amounts seem normal
Changes in appetite or drinking
Changes in behaviour
Recent household changes
The type and location of litter trays
Any recent food or litter changes
This information can be very useful during a veterinary consultation.
When to Contact Your Vet
Contact your veterinarian if your cat suddenly stops using the litter tray and the behaviour continues, particularly if there are other changes in health or behaviour.
A veterinary examination is especially important if your cat appears uncomfortable when urinating or defecating.
Do not assume that a healthy-looking cat cannot have a medical problem.
Cats are very good at hiding signs of illness.
When It Is an Emergency
Seek urgent veterinary care if your cat repeatedly strains to urinate but produces little or no urine.
This is particularly important in male cats because a urinary blockage can become life-threatening.
Other serious signs include severe pain, collapse, extreme weakness, repeated vomiting, or a major sudden deterioration in your cat’s condition.
If you are unsure whether the situation is urgent, contact a veterinary service and explain exactly what you are seeing.
A Simple First-Check Routine
When your cat suddenly stops using the litter tray, avoid changing everything at once.
First, watch how your cat behaves around the tray.
Then check whether the tray is clean, accessible, large enough, and located somewhere quiet.
Think about whether the litter, tray, location, cleaning products, or household environment recently changed.
Check for signs of urinary or digestive problems.
Clean accidents thoroughly.
Avoid punishment.
If the behaviour continues or you notice physical symptoms, contact your veterinarian.
This approach gives you useful information without assuming the cause.
Final Thoughts
A cat that suddenly stops using the litter tray is not necessarily being naughty or difficult.
The change can be linked to the litter tray itself, stress, environmental changes, or a health problem.
The most important thing is to take sudden changes seriously.
Check the tray, litter, location, cleanliness, and household environment. Watch your cat carefully for changes in urination, appetite, drinking, behaviour, and comfort.
Most importantly, pay attention to attempts to urinate without producing a normal amount of urine. That can be an emergency and should never be ignored.
With patience, careful observation, and appropriate veterinary help when needed, you can often identify what has changed and give your cat a better chance of returning to a comfortable toileting routine.
Frequently Asked Questions
Why has my cat suddenly stopped using the litter tray?
Possible reasons include a dirty or unsuitable tray, a change in litter, an uncomfortable location, household stress, conflict with another cat, or an underlying health problem. Sudden changes should be taken seriously.
Should I punish my cat for urinating outside the tray?
No. Punishment can increase stress and will not explain why the behaviour started. Focus on identifying the underlying cause.
How many litter trays should I have?
A commonly recommended starting point is one tray per cat plus one extra, placed in suitable locations. Individual homes and cats may require different arrangements.
Why is my cat peeing beside the litter tray?
Your cat may dislike the tray or litter, feel stressed, have difficulty accessing it, or have a medical problem that makes urination uncomfortable. Persistent or sudden changes warrant veterinary advice.
What if my cat keeps going to the tray but produces little urine?
Contact a veterinarian promptly. Repeated straining with little or no urine can indicate a serious urinary problem.
Is litter type important to cats?
Yes. Some cats have strong preferences regarding texture and scent. A sudden change in litter can sometimes lead to avoidance.
Should I use scented litter?
Some cats dislike strong fragrances. If your cat has started avoiding the tray, an unscented option may be worth discussing with your veterinarian or trying as part of a gradual change.
Why does my cat spray instead of using the tray?
Spraying can be related to territorial marking, stress, or other factors. A sudden change in urine behaviour should still be discussed with a veterinarian, particularly if there are signs of discomfort.
Can stress make a cat stop using the litter tray?
Yes, stress can affect feline behaviour and may contribute to changes in toileting. However, medical causes should not automatically be ruled out simply because your cat has experienced a stressful event.
Why does my older cat suddenly avoid the litter tray?
Older cats may have difficulty reaching or entering a tray because of mobility problems or discomfort. A low-entry tray in an easily accessible location may help, but sudden changes should be discussed with your veterinarian.
How should I clean cat urine from the floor?
Use a suitable pet-safe urine-odour cleaner and clean the area thoroughly. Avoid ammonia-based products because the smell can resemble urine.
When should I take my cat to the vet?
Seek veterinary advice for persistent or sudden litter-tray changes, especially when accompanied by straining, frequent attempts to urinate, blood in the urine, pain, vomiting, appetite changes, lethargy, or other unusual behaviour.
Can a cat stop using the tray because it is too dirty?
Yes. Cats may avoid a tray that is heavily soiled. Regular removal of urine and faeces and appropriate cleaning can make the toileting area more acceptable.