Leviticus 11:31-33

These are unclean to you among all that swarm. Whoever touches them when they are dead shall be unclean until the evening. And anything on which any of them falls when they are dead shall be unclean, whether it is an article of wood or a garment or a skin or a sack, any article that is used for any purpose. It must be put into water, and it shall be unclean until the evening; then it shall be clean. And if any of them falls into any earthenware vessel, all that is in it shall be unclean, and you shall break it.