deer love beans when they are first blooming and under 12" tall. Once they hit around 12" they will still eat them, but not as frequent. (at least here in MO it's like that). I'm assuming you are keeping the beans in there until you plow them up in the spring? If so, be patient. I bet you one thing... there are more deer eating off that plot than you think.
...and on that day when my strength is failing, the end draws near and my times has come, still my soul will sing Your praise unending, ten thousand years and then forevermore!