Poison ivy, munch munch munch. Thorny thickets munch munch munch. I used them to clear several acres of overgrown brush. A cloven hoofed garbage disposal. Just keep them away from any "special" plants, cause they'll eat those too. They can be a pain in the ass though in the barn. They'll raid the feed room, chew tack, climb on your car, and when you aren't expecting it, head butt your ass. Keep them tethered. When you're done with 'em, they make delicious curried goat.