Molly Gene, this is not from my personal experience and please take it with a grain of salt. I was talking to a gardener down the road that has Sandy Creek running through his property, and therefore a deer problem because the deer come to drink and then munch on his garden and trees.
He swears by putting dryer sheets on 3' poles around his garden to deter deer depredation. He also hangs the dryer sheets on his fruit trees and pecan trees. I asked if there was a particular brand or scent that repelled the deer, and he said it didn't matter, but he thought the "smellier, the better." He renews the sheets after a rain, or when they don't smell very much. He uses clip clothes pins to attach the sheets to the poles or trees.
I know it sounds silly and it may not work for you, but I thought I'd offer this idea as a suggestion.