Pita is really bad about wanting to run out of the front door when someone comes over or rings the doorbell. I have to put her on the other side of the baby gate in the back to insure that she does not get out. Does anyone know of any training techniques that I can use to get her to wait, or sit and not try to make a break for it?....I have been working on stay which she does well with in a calm environment but the second that doorbell rings it's pure chaos! uhhhhhh....