Well, they don't just chop off the main stem. They chop off each little side branch, and leave a whole pile of garbage- in the form of individual branches. And they ONLY pick on the coleus, in different beds, front and back yards.
Last night I must have had a herd of deer. They only ate the tops off of 2 tomato plants, but they left big turds all over the yard. Usually when the deer come, they eat everything.
Karen