The size has to be right
A space that is too large lets a dog eliminate in one corner and rest in another, which defeats the purpose. A space that is comfortable for resting but not spacious enough for a separate bathroom corner works better.
It is a short-term tool, not storage
A confined space can help during short periods when you cannot supervise directly, but it is not a substitute for regular trips outside and should not be used for long stretches, especially with a young puppy.
The dog's relationship with the space matters
A crate or pen introduced gradually, with positive associations, supports calm confinement. One used only for punishment or long isolation tends to create stress that works against the goal.
What to avoid
Keep the response gentle.
Avoid using confinement as a punishment after an accident — it teaches the space is unpleasant, not that the timing was wrong.
Safety boundary
When to get more help.
If your dog shows distress, panic, or self-injury attempts around confinement, stop using it and address the underlying stress before trying again.