Same as other bisque porcelain figures. If it's just dust use a soft paint brush to just dust it off. If it's caked on Use a mild soap to create a sudsy water, then gently wipe each with a damp soft cloth. NEVER submerge in water. Wipe off excess water with a dry cloth. Stubborn spots a bit of baking soda mixed with water works wonders. Place a towel on a table or countertop to let the figurines air dry before putting them back in their place.