I've only tried it, twice. It worked both times.....but I've also realized this. I watch.....and wait.....and wait.....for the deer to stop on its own. By the time I realize it isn't going to.....I make a noise like they do on "TV". By this time....I've learned the deer are already out of my effective range.....and the best thing I could have done was keep my "maaaaaing" mouth shut and not alert the deer to my presence.

Never say never.....but I think it'll be a long time before I do this, again.