GET COB Taxidermy - Corn Media Tumbling & Hide Cleaning, 4 lb Corncob grit is excellent for the removal of fats and oils from carcasses, fur or feathers Use corn cob grit in the tumbler while drying birds For tumbling bird skins, delicate furs such as mink, sable All natural, inherently absorbent, contains no silica, dust free, or coarse and fine grades available For taxidermy purposes, we recommend the use of grit-1420 and grit-2040