TIP #1: RESPOND TO THE SILENCE
When confined, if your dog begins to howl, whine, or bark, wait until he has been quiet for at least ten seconds before you respond. Otherwise, he will learn that whining or barking makes you appear or gets him out of the confinement area, and he will bark or cry longer in the future.
TIP #2: GO QUIET AND STOP THE TREATS
When you move away from any new thing, go quiet and stop the treats. We want your puppy to learn that the presence of the thing is what makes you give her the food. That way, she begins to associate the food with the new experience and realizes that, “Hey, that new thing isn’t so bad after all.”
Jeff Dentler, CPDT-KA, IAABC-ADT, FFCP, CTDI