Despite U/M's claim of having the richest alumni, largest endowment, Stephen Ross's deep pockets, etc. they have resorted to renting goats from a goat farm in Milan to eat down the edges of the rough. Because they can't seem to hire enough help to selectively remove invasive plants, etc.
I can attest to the fact that goats do not eat everything in sight, or cans, or paper, or any of the other stereotypes. They also do not eat every plant you want removed from an area, they eat for nourishment and so the results may vary as to their landscaping abilities.
http://www.mlive.com/news/ann-arbor/index.ssf/2015/07/michigans_goat_cad...