But doesn't just about any sound stop a moving deer? Like the "meh" sound that so many TV bowhunters make before letting the arrow fly? I have heard of people just saying "hey deer" just before the shot.

Of course, on Saturday I tried using the "meh" sound on a doe that came in from behind and was moving rather quickly, and it didn't work! But I think she knew something wasn't right and had already decided that she was getting out of the area.