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https://m.youtube.com/watch?v=WzlMjORQoKA Cordite have a look at this and anybody else that is interested. Some interesting stuff.
Could not find the whole program but some one smarter maybe able...

Sounds like the dog is stressed at being left alone. Before you try the collar thing get the owner to record there voice. Usually at a dinner party or on the phone. Then get the owner to shut the dog...