I knew of the beetle method but thought to myself " surely the pro`s have a far quicker method than the insects"

Also when boiling up a skull with a little washing detergent thrown into the water the fat content is reduced to virtually nil and the beetles only remove the edibles.
None boiling leaves a 'raw' bone,maybe its chem treated?
I thought that perhaps they either broke the skull down or used a giant vat?????