Do not think that if you decide you'll just get rid of the cows yourself it will be easy. It is easier to move a department chairman than it is to move even one cow. Fire a .45 over the head of a department chairman or drive straight at one with a pickup truck, he (or she) will move; a cow will not. I have tried both of those tactics any number of times, and no cow has ever so much as budged. It's not just a matter of saying, "Shoo, cows!" Trust me.