Louis is right about the tent catapillers though. You have to burn them out of the trees. They will eat an entire tree bare in a matter of days. They aren't butterflies though so I don't mind. If I remember correctly when I was little I heard they were non native to the US and had been brought over for some reason but then like everything else we do this with (cudzu, african bees) etc etc it got out and liked it here.
Peta isn't that flat bread that is used in gyros?