Care guide

Urine marking indoors

Marking is small squirts of pee on upright things like sofa corners and walls. Rule out a bladder problem, clean with an enzyme cleaner, and supervise.

Key facts

Verdict: Care guide
Call your vet if: A house-trained dog suddenly starts peeing indoors, peeing small amounts very often, straining or crying while peeing, blood in the pee and peeing in unusual places.
First step: See your vet first to rule out a bladder infection or other illness, especially if the change is sudden. All steps
Sources: VCA Animal Hospitals, AKC, Merck Veterinary Manual. Reviewed 9 October 2026.

What to do

See your vet first to rule out a bladder infection or other illness, especially if the change is sudden.
Clean every marked spot with an enzyme cleaner made for pet stains, to remove the smell completely.
Supervise your dog indoors. If it sniffs hard at a spot or starts to lift a leg, calmly redirect it before it pees.
When you can't watch, keep it for now in a small area where marking is easier to manage.
Keep up regular trips outside, and praise and reward peeing in the right place.
Watch closely when visitors come or new things arrive, such as bags, plants or furniture, and keep your dog on a leash with visitors until it settles.
Ask your vet whether neutering could help. It cuts marking in many males, but it isn't a guaranteed cure.
If stress or anxiety seems to set it off, ask your vet about a behavior plan or a behavior specialist.

Don't

Don't scold, startle or punish your dog, even for marks you find later. Fear can make marking worse.
Don't rely on a belly band as the fix. Use it only for short periods, and check it often and change it when wet.

When to call your vet

A house-trained dog suddenly starts peeing indoors
Peeing small amounts very often
Straining or crying while peeing
Blood in the pee
Peeing in unusual places

Why

Dogs mark to leave scent messages, often after changes like a new pet, visitors, new furniture or other dogs nearby, and sometimes from anxiety. Marks are usually small amounts on upright objects, unlike a full-bladder accident.

Sources

Guide reviewed 9 October 2026. Page updated 7 November 2026.

General information from the sources above, not a diagnosis. When in doubt, call your vet.