OR if you don't want to, or don't have anything to boil it in, you can just submerse the skull in water and place the bucket outside, where critters can't get to it, let it sit for about a week and then remove it and get more of the loose stuff off, then again submerse it in water for another week or so, and repeat as necassary. Then get some high % peroxide and brush that on the cleaned skull to whiten it! Don't get the perosixe on the antlers, as it will whiten them also.