I've suggested this now to some of my goat-owning friends, along with the other goat-services I've found lately (lawn care; weed removal; and the now infamous goat yoga.) So far they are all dubious about the feasibility of any of these ventures. Transportation issues seem be a big stumbling block, along with the problems of keeping the goats in check. (Think herding cats is fun? Then apply for job doing so with goats, they say! SO much more mobile, have horns, and devious AF....)