[crisp]

You can add a quiet 'no', nothing wrong with that. The point is not to punish the dog or in any way show that you are mad. You have to interrupt and take them directly outside. Remember, you are teaching the dog 'where to go' and not only 'where not to go'. He needs to associate being outside with potty breaks. Thats why he should not be allowed to roam free around the house withour supervision. If he is caught in the act, he should be immediately taken outside.

 

[crisp]

I heard a joke once...

An owner caught his puppy going on the carpet...he smeared the dogs face in the feces and threw him out the window.
The second time he caught the puppy...he smeared the dogs face in it and threw him out the window.
The third time it happened...he stuck the dogs face in it and threw him out the window.
The fourth time...the dog went on the carpet, put his own face in it, and jumped out the window.