If your compost bin is sufficiently hot,then they will rot down in there. But,it will attract rats and foxes,and with the amount you would be putting in,might not rot down enough by the time you come to use your compost. The bin seems the easiest solution,it's organic matter so no green issues there. You could always dig a largish pit and either burn with diesel or lime over after each addition,but that seems a lot of work and expense and not particularly green. Bin 'em I say...... Ree