Rendam dalam hidrogen peroksida. Masukkan gigi-gigi ke dalam soketnya. Gunakan kapas untuk gigi karnivor. Keringkan tengkorak. Awetkan dengan poliuretan.

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Submerge the skull in a large container full of water. Include only 10-15 ounces of 35 percent hydrogen peroxide per approximately 5 liters (1.3 US gal) of water.  Do not use chlorine bleach, because this can damage bone and teeth. This turns the skull a bright white. Skulls are naturally an off-white to yellowish color. Leave the skull in the water for at least 24 hours. If you use one of the water methods for cleaning an animal skull, the teeth will drop out of the tooth sockets. Save the teeth and replace them using a small amount of super glue. Most animals whose skulls are used in preservation are carnivores and have a set of canine teeth. These teeth have a tendency to be much smaller than the actual socket they fit in. Use some cotton balls soaked in glue. Wrap a bit of the cotton around the tooth and insert it into the socket. Leave the skull outside for 24 hours to let it dry in the sun and to let the glue set. Because the skull will have no more organic matter attached to it, you don’t have to worry about animals or bugs. Spray the skull with several coats of polyurethane letting each coat dry before applying the next. This leaves a smooth and shiny finish.