Adult dogs usually learn house training faster than puppies. They have bladder control a puppy does not, and they generalize more quickly.
What slows it down is almost never the dog. It is an unclear schedule, punishment, or an undiagnosed medical problem.
The short version
- See a vet first if a previously reliable dog starts soiling indoors.
- Supervision plus schedule beats correction, every time.
- Most adult rescue dogs are reliable within two to four weeks.
- Dogs from kennels or breeding operations take considerably longer — months, not weeks.
Rule out the medical causes first
This is not a formality. A meaningful share of house soiling has a physical cause, and no amount of training fixes it.
| Sign alongside the accidents | Possible cause |
|---|---|
| Straining, frequent small amounts, blood | Urinary tract infection or stones |
| Drinking much more than usual | Kidney disease, diabetes, Cushing’s |
| Leaking while asleep | Urinary incontinence, common in spayed females |
| Loose or urgent stools | Parasites, diet intolerance, colitis |
| Sudden onset in an older dog | Cognitive dysfunction, arthritis pain on the stairs |
| Accidents only when alone | Separation distress rather than house training |
The last two rows overlap with what changes in an older Westie and with separation distress and other terrier behavior, both of which need a different approach entirely.
The schedule that works
House training is a numbers game. You are trying to make the right choice happen so often that it becomes the default.
| When | Why it matters |
|---|---|
| First thing on waking | The fullest bladder of the day |
| Within 15 minutes of every meal | Eating stimulates the gut reliably |
| After every nap | Short sleep still fills the bladder |
| After play or excitement | Arousal increases urgency |
| Before being left alone | Removes the most likely accident window |
| Last thing at night | Sets up a clean night |
| Every 2–3 hours otherwise, at first | Stretch the interval as reliability builds |
- Go out with the dog, every time. You cannot reward what you did not see, and a dog let out alone often comes back in and then goes.
- Stand still and be boring until the dog performs. Sniffing time is part of the process.
- Reward within three seconds, outdoors, with something genuinely good. Three seconds is the window that teaches.
- Then have the walk or the play as a second reward, rather than ending the fun the moment the dog goes.
Supervision, and what to do about accidents
Between outings, the dog is either where you can see it, or somewhere it is unlikely to soil. That is the whole method.
- Use a crate or a small safe room when you cannot watch. Most dogs will not soil where they sleep — with one important exception below.
- Close doors. Free run of a house is what lets a dog slip away to a spare room.
- Learn the pre-signal. Circling, sudden sniffing, heading for a door or leaving the room usually precedes an accident by seconds.
- Interrupt gently if you catch it, with a light clap or a cheerful noise, then straight outside and reward if the dog finishes there.
- Never punish after the fact. The dog cannot connect it, and you teach it to hide from you instead.
- Clean with an enzymatic cleaner, never ammonia-based. Residual scent invites a repeat in the same spot.
Oregon Humane Society publishes practical training resources for newly adopted dogs, which cover the same ground from a large shelter’s experience.
The exception: dogs from kennels and breeding operations
The whole method above rests on a dog not wanting to soil where it sleeps. A dog that has spent years in a run has had no choice but to do exactly that.
Those dogs need the instinct built rather than reawakened, and it takes months. A crate may not help at first, because the crate is not yet a den to them.
- Use a pen rather than a crate initially, with a clear sleeping area and a separate surface.
- Go out far more often than the schedule above — hourly at first.
- Expect regression during any change of routine.
- Reward extravagantly for anything outdoors. This is a new concept, not a reminder.
The full timeline for these dogs is set out in what adopting a retired breeding Westie really involves.
How long it takes
| Background | Typical time to reliable | Notes |
|---|---|---|
| Previously house trained, settling in | 3–14 days | Usually stress rather than lost training |
| Adult, patchy history | 2–4 weeks | Responds quickly to a clear schedule |
| Long-term outdoor or yard dog | 4–10 weeks | Needs the indoor concept built |
| Retired breeding or kennel dog | 3–9 months | Slow, non-linear, worth it |
| Senior with medical involvement | Depends on treatment | Manage with belly bands and access rather than training |
Frequently asked questions
How long does it take to house train an adult rescue dog?
Most are reliable within two to four weeks with a consistent schedule. Dogs from kennels or breeding operations can take three to nine months, because they must build the instinct rather than recover it.
Why is my newly adopted dog having accidents when it was house trained before?
Usually stress, an unfamiliar signal for asking to go out, or not knowing where the door is. If it persists beyond two weeks, or comes with straining or increased drinking, see a vet.
Should I use puppy pads with an adult dog?
Generally no. Pads teach that indoors is acceptable, which is the opposite of the goal. The exception is a dog with a medical condition or very limited outdoor access.
Is it too late to house train an older dog?
No. Older dogs learn this quickly provided there is no medical cause. Age is far less relevant than background and consistency.
Does rubbing a dog’s nose in it work?
No, and it does harm. The dog cannot link the punishment to something it did earlier, so it learns to avoid you and to go where you cannot see. Supervision and reward are what work.
If it is not going well
Call the rescue that placed the dog before you conclude it is not working. House soiling is one of the most common reasons adoptions wobble and one of the most fixable.
What to expect in the first 30 days with a rescue Westie puts this in context, and if you are weighing whether you can continue, our guide to your options opens with the problems that turn out to be solvable. You can always reach us through the surrender and rehoming page.