My buddy is a taxidermist and to get the european mount he sends them in to a guy that has a tank with some type of beetle in it. The skulls come out looking like plastic. The teeth even come clean!!! Check your local taxidermist and see if they have access to anyone with the tank of beetles otherwise, leave it outside and the bugs and such with clean it off nicely for you. It may take some time but they do a good job!!!