Wow Purrley that is a problem! I wonder what she is responding to. Can you hear anything going on that she may be tuned in to (noises in the next condo?) I really don't know how I would handle that one. I can relate in a small way because sometimes when Bella and I get up early (before 6:00 AM) and I let her out to go potty she might spot a squirrel or bunny or something and bark at it. I immediately run for the doggie biscuits and I can always lure her back inside with them. Obviously you are dealing with a different situation but the result is the same (noisy pups!) Hope someone here can help you. I have no suggestions but do have sympathy for what you are going through. Sorry.