Cat Peeing Outside the Litter Tray: Causes and Fixes

When it's an emergency

Contact your vet straight away, day or night, if your cat:

• Is going in and out of the tray, squatting and straining, but producing little or no urine
• Is crying or yowling while trying to wee
• Is licking their genital area repeatedly
• Is vomiting, very quiet, hiding or seems weak alongside these signs

These can mean a urinary blockage, which is more common in male cats and can become life-threatening within hours. Our guide to cat straining in the litter tray explains why this can't wait.

Book a vet appointment soon, within a day or two, if your cat:

• Is weeing in new places, especially on soft things like beds, rugs or laundry
• Is passing small amounts of urine often
• Has blood in their urine, or it looks pink or red
• Is drinking more than usual or producing much larger puddles
• Seems stiff, reluctant to jump or less active

Weeing outside the tray or spraying?

These are different behaviours with different causes, so it helps to work out which one you are seeing.

	Inappropriate urination	Spraying (marking)
Position	Squatting	Standing, tail raised and quivering
Surface	Usually horizontal: floors, beds, rugs	Usually vertical: walls, doors, curtains
Amount	Often a normal-sized puddle, or many small ones	Small amount
Common causes	Medical problems, tray issues, stress	Territory, stress, other cats, not neutered

Both can be linked to stress, and both are worth discussing with your vet.

Medical causes

Your vet will want to rule these out first:

• Cystitis and FLUTD. Inflammation of the bladder makes cats feel the urge to wee often and can be painful. Many cats with cystitis have no infection; stress is thought to play a role in a common form called idiopathic cystitis. See cystitis and FLUTD in cats.
• Urinary infections or bladder stones.
• Conditions that increase thirst and urine, such as kidney disease, diabetes and hyperthyroidism. A cat producing more urine may not make it to the tray, or may find the tray too wet.
• Arthritis and pain. Climbing into a high-sided tray, or going up and down stairs to reach it, can hurt.
• Age-related changes. Some older cats become confused or forgetful.

Your vet may examine your cat, test a urine sample and possibly run blood tests or imaging.

Litter tray and environmental causes

If your cat is medically well, look at the tray itself. Common issues include:

• Not enough trays. A widely used guideline is one tray per cat plus one extra, in different locations.
• The wrong place. Trays in busy corridors, next to noisy washing machines, or beside food bowls can put cats off.
• Dirty trays. Many cats won't use a tray that hasn't been scooped.
• A litter change. Cats can be particular about texture and scent. Scented litters and liners are disliked by some cats.
• Covered trays or tray size. Some cats feel trapped in a hooded tray, and many trays are too small for larger cats.
• Being ambushed. Another cat, a dog or a child may be bothering them in or near the tray.

Our guide to litter tray problems goes into tray set-up in more detail.

Stress and changes at home

Cats are sensitive to change. Moving house, building work, a new baby, a new pet, a cat outside the window, or tension between cats in the same household can all lead to toileting problems. Stress may also make cystitis more likely.

Steps to take

1. Rule out urgent problems. If there is any straining or reduced urine, call your vet immediately.
2. Book a vet check. Bring a note of when and where accidents happen, and a urine sample if your vet asks for one.
3. Clean accidents thoroughly. Use an enzyme-based cleaner designed for pet urine. Avoid ammonia-based or strong-smelling cleaners, which can smell like urine to a cat and draw them back.
4. Review the trays. Add an extra tray if needed, place them in quiet, easy-to-reach spots, and scoop at least once a day.
5. Go back to basics with litter. If you changed litter recently, try returning to the previous type. Many cats prefer a fine, unscented, clumping litter.
6. Make access easy. For older or stiff cats, offer a large tray with a low entrance on every floor of the house.
7. Reduce stress. Keep routines consistent, give each cat their own resources, and provide hiding places and high perches.
8. Never punish. Telling a cat off or rubbing their nose in it increases stress and usually makes the problem worse.

If the problem continues after medical causes have been ruled out, your vet may refer you to a qualified animal behaviourist.

Know your cat's normal

Toileting habits are one of the clearest windows into a cat's health, but they are easy to miss when a tray is scooped in a hurry. Getting a sense of how many clumps your cat usually leaves each day, and how much they drink, helps you spot a change early. Petopedia lets you log food, water, weight and behaviour, so if accidents start you can see whether anything else shifted at the same time and give your vet a clear account.