 Deer tend to browse on the edges of a soybean field. They will occasionally wander farther in, but Heaton says they probably feel safer staying along the edge. However, when you apply the repellent, you will have to spray more than just the edges. You're really going to have to spray the whole field because what we saw in research plots, when we just treat the edges of the field, the deer actually just move right through that treated area and go further out in the field and start feeding. So if you don't treat the whole field, they will walk out further and feed deeper into the field than normal.