All of the discussion of skeleton cleaning assumes (if I'm reading the discussion correctly) a human skeleton. If that's the case, then the discussion should be about the appropriateness of a museum keeping human remains in the first place. Hasn't anyone heard of NAGPRA (the Native American Graves Protection and Repatriation Act)? Most culturals consider the disposition of the remains of their dead to be special. For museums to ignore these values by curating (or worse, displaying) human remains is offensive.