in my area in southern wisconsin deer hit the beans very hard in two different times. The first is when the beans are about 12 to 18 inches high. This is in the summer. Beans are not as favorable once past that stage. The second is late season standing bean fields. When its cold and the snow is deep i have had 7 shooter bucks hitting a half acre patch of beans in late december. they seems to absolutely flock to them. Those are the two times when i have experenced the most activity in beans.