Leviticus 11:31-33

These are unclean to you among all that creep. Whoever touches them when they are dead shall be unclean until evening. Anything on which any of them falls, when they are dead shall be unclean, whether it is any item of wood or clothing or skin or sack, whatever item it is, in which any work is done, it must be put in water. And it shall be unclean until evening; then it shall be clean. Any earthen vessel into which any of them falls you shall break; and whatever is in it shall be unclean