Annie,
I'm surrounded by woods, so I've got them all - deer, bunnies, chipmunks, raccoons, etc. The raccoons are buggers...I've found they like to dig up any new
plants (even ones in elevated urns!) the night after I
plant them, I assume because they think there are grubs or other bugs underneath. Sometimes their little claws tear up the
plants pretty well. Not sure from your description whether this is what happened to your hostas. Anyway, my solution is to sprinkle a fat red line of cayenne
pepper around each
plant or bed after I
plant. Nothing bothers them afterwards! One application is generally all it takes to frighten all the critters away for good. Good luck!
Julie