Sprinkle baking soda inside the shoes and let them sit overnight. This will absorb moisture and odor from the shearling lining. Tap the shoes upside down over a trash can the next day.
Brush loose dirt off the outside of the shoes with an old toothbrush.
Moisten a cleaning rag with cold water and a few drops of mild laundry detergent. Rub this over any stuck-on residue that has accumulated on the LL Bean moccasins. Continue until all residue is removed.
Rinse your cleaning rag and wipe over the area once again to remove leftover soap from the moccasins.