I haven't tried that one but it's worth a try. It's kind of putting her in time out for undesirable behavior. I've been reading about training other dogs and it has helped tremendously with her. She goes biserk when we go outside and I've been working on breaking that habit and she's doing better with that. I'll try the crate or putting her in some kind of time out to see how she handles it. She also shows this type of aggression when we let them outside to potty. I used to pick her up and let the others out first, but that's showing negative reinforcement and we don't want that.