One of my dogs is silent as a fish, the other is a barker. We use a bark collar, either the automatic kind or just put the training collar on her and zap her with a "Quiet!" when she barks. But of course you WANT her to bark at strangers . . . so you want her to be quiet only when you ask her to.
I think in all thirteen years that we had Ed, he only barked a handful of times, and scared himself when he did it. LOL. I think that is why it frustrates us with Yenta so much now.
Thanks for the advice, I will look into the collar. If we can use it only when she goes outside that would be great! As for strangers, it is when we are inside that is when we are looking for "protection" the most.