We used to put skulls on a big fire ant mound, and those little suckers would NEVER leave anything attached to any part of it! Best "skull cleaners" I have ever seen!
Here in east TX, you have to pick a fire ant mound that isn’t in red dirt, or it’ll stain the skull.I have cleaned a beaver skull by leaving it on a big red ant den before. It went from being skanky rotten to white a a couple of months