lee-i typically just bury em till im ready to use em. same thing that cracker stated, put rocks or something over em so nothing digs em up.
reckon if yr ground is frozen by now that would be a more difficult task and not fast anyhows.
boiling has a degrading effect on bone, so i dont recommend that.
seems i read somewheres else on this site regarding how to process bones but derned if i can find it or recall where now...