They run just from them barking at them, well they used to, now the deer are realizing the bark is no danger. They just look, even at us, ignore!
I know the feeling; prior to 15 years ago, I bet I saw ONE deer in 20 years here as there was enough woods surrounding (and I live in suburbia proper!). Then they built a bunch of houses and wiped out a whole swath of woods. Now, if I don't see deer daily, I'm surprised. And of course, in those first 20 years, I had NO garden damage. Now, I have to erect fences and spray regularly.
So, when I DO see any deer and they're in the yard, no amount of tapping/swinging my arms, cursing so the words penetrate glass, makes them move. I actually have to go out and practically chase them away, that's how confident they've become...sigh, it's a tragedy, I know. Makes me wish I HAD hounds to let loose...