Kroki

Question

How do I stop my dog peeing in the house?

The short answer

Rule out a health cause first: a urinary infection, bladder stones, kidney disease or pain can all make a grown dog pee indoors, so see your vet, especially if it started suddenly. Then look for the trigger, such as marking, fear, being left alone or a change at home. Clean every spot with an enzymatic cleaner, go back to regular, rewarded trips outside and never scold. Kroki, a reward-based training app for puppies and dogs, has a free safety check and an SOS card for house training.

How to do it, step by step

  1. Start with a vet visit

    When a dog that used to be clean starts peeing indoors, the body is the first suspect. Tell your vet how often your dog pees, how much it drinks, whether it strains or leaks and when it started. A urine sample taken in the morning is often useful, so ask whether to bring one. Training only makes sense once a medical reason has been checked.

  2. Keep a short diary for a week

    Note each accident: time, place, a puddle or a few drops, and what happened just before. Were you out? Did visitors arrive, a delivery van rattle past or a new dog move in next door? A pattern usually shows up after a few days and tells you whether you are dealing with marking, fear, being alone or a simple gap in the routine.

  3. Clean every spot with an enzymatic cleaner

    Your dog’s nose finds old spots long after yours has given up, and a spot that still smells of pee invites the next one. Soak each place with an enzymatic cleaner, often sold as a pet odour remover, and let it work as the label says. Ordinary household sprays tend to leave enough smell behind.

  4. Go back to the house-training basics

    Treat your grown dog for a few weeks as if it were new to the house. Take it out after sleeping, after meals, after play and before you leave, always to the same patch. The moment it pees there, say “Top!” and give a treat on the spot. A grown dog can usually hold on longer than a puppy, but regular, rewarded trips rebuild the habit fastest.

  5. Close off the favourite spots

    While you rebuild the routine, keep doors to spare rooms shut and use a baby gate where needed, so your dog cannot slip off to its usual corner. Keep it in the room you are in when you cannot watch the rest of the house. Many dogs avoid peeing where they eat and rest, so placing a bed or a feeding spot on an old marking place can help.

  6. Work on the reason behind it

    If the diary points to visitors, noises or being left alone, the peeing is a symptom of stress, and cleaning alone will not change it. Keep greetings calm, give your dog a safe retreat when the house is busy and build up time alone in tiny steps. If accidents happen only when you are out, get help from a behaviour professional.

Living with a puppy?

A puppy that pees indoors is usually not unwell or marking; it simply has a small bladder and has not yet learned where its toilet is. That calls for a tight schedule of trips outside, lots of rewards and patience rather than detective work. The page on house training a puppy explains that daily routine.

Why the reason matters more than the puddle

The UK charity Dogs Trust lists medical problems first when a dog pees or poos indoors. Changes in how often or how much a dog pees, or leaking, are signs to have checked, and urinary tract infections, bladder stones and kidney disease are among the common causes. Pain matters too: a dog with sore legs may find going indoors easier than walking out. In older dogs, Dogs Trust also names cognitive dysfunction, a decline similar to dementia in people, and problems with mobility.

Feelings play a part as well. Dogs Trust explains that fear and stress, for example from loud noises, visitors or a new member of the household, can make a dog briefly lose control of its bladder, and that accidents which happen only when the dog is alone point to stress about being left. In a survey of about 13,700 Finnish pet dogs, younger dogs were more often reported to destroy things or urinate when left alone than older ones (Salonen and colleagues 2020).

Many owners feel sure their dog “knows it did wrong”. In an experiment with 14 dogs, the so-called guilty look did not depend on whether a dog had actually broken a rule. It appeared more often when owners scolded, and most strongly when the dog had done nothing wrong at all (Horowitz 2009). The look is a reaction to your mood, not a confession, which is why Dogs Trust warns that telling a dog off adds to its worry and can lead to more accidents, often in hidden corners.

Clues in where and how your dog pees

  • Small amounts on upright things such as door frames, furniture legs or new shopping bags: most likely marking.
  • Full puddles, often in the same spot: a routine gap or a need to go more often, so check both the schedule and with your vet.
  • Only when you are out: likely linked to being alone, especially with chewing at doors, howling or a soaked, drooling face.
  • When guests arrive, at loud noises or when someone leans over it: fear or great excitement. Keep greetings low-key and let your dog come to people.
  • Dribbles while it sleeps or lies down: leaking is a matter for the vet, not for training.

What makes indoor peeing worse

  • Shouting, or rubbing your dog’s nose in the mess. It learns to fear you, not where to pee, and starts to hide its accidents.
  • Taking water away. A grown dog needs free access to water, and drinking a lot more than usual is itself a reason to see the vet.
  • Assuming a rescue dog is already house-trained. Dogs from kennels or the street may never have learned it and need the full basics.
  • Expecting the habit to vanish once the cause is treated. After an infection or a stressful time, the old spots may still smell tempting, so keep the routine for a while.

When to see a professional

Many causes of indoor peeing are medical, so check these first:

  • your dog suddenly pees indoors after years of being clean, pees much more often, strains, or there is blood in the urine

    Have a vet take a look

  • it drinks much more than usual, leaks urine while resting, or seems confused, stiff or in pain

    Have a vet take a look

  • it keeps trying to pee but little or nothing comes out, or it seems very unwell

    Emergency: get help now

  • accidents happen only when it is alone, together with howling, scratching at doors or heavy panting

    Get support from professionals

The help pages list services in Germany, Austria and Switzerland only. Elsewhere, ask your vet practice who they recommend near you.

Frequently asked questions

Why has my house-trained dog suddenly started peeing indoors?

A sudden change most often has a reason in the body or in the household. Have your vet check for an infection, bladder stones or other illness first, then think about recent changes such as a move, a new baby or another pet.

Can a urine infection make a dog pee in the house?

Yes, an infection can make a dog need to go often and urgently, so it may not make it outside. Small, frequent puddles, straining or blood are typical signs to show your vet.

How can I tell marking from a full accident?

Marking is usually a small amount on an upright surface, often a new object or near a door. A full accident is a normal-sized puddle, usually on the floor, when the dog simply could not or did not hold on.

Does neutering stop a dog from marking indoors?

Neutering may reduce marking in some dogs but not in all. Talk it through with your vet, and meanwhile clean marked spots thoroughly and keep your dog away from them.

Why does my dog pee when guests arrive?

Most often from excitement or worry, not from a lack of house training. Greet calmly, let guests ignore your dog at first and take it outside before the doorbell rings.

Is my dog peeing indoors to get back at me?

No, dogs do not pee out of spite. They pee indoors because they need to, are unwell, stressed or marking, and the guilty look you see is a reaction to your mood.

My older dog leaks urine while sleeping. Is that a training problem?

No, leaking during sleep is not something a dog can control or learn away. It can have medical causes, so book a vet check and use washable bedding until then.

Should I use pee pads for a grown dog?

Usually not as a long-term plan, because pads teach your dog that peeing indoors is fine. They can make sense for an old or sick dog that cannot get outside in time.

Sources