Leviticus 11:32-33

Also anything on which one of them may fall when they are dead becomes unclean, including any wooden article, or clothing, or a skin, or a sack—any article of which use is made—it shall be put in the water and be unclean until evening, then it becomes clean. As for any earthenware vessel into which one of them may fall, whatever is in it becomes unclean and you shall break the vessel.