Gentlemen, I think I made a mistake by leaving my skull head too long in the ground. If a buck I get is short of a wall mount, I have been burying the head for decay purposes and cover the rack on top of the ground. The problem I have had with at least two of them the last couple of years is the dirt is getting stained into the skull. Any ideas to get this somewhat clean? Will bleach make the bone to brittle? Thanks in advanace