Leviticus 11:35 And every thing whereupon any part of their carcase falleth shall be unclean; whether it be oven, or ranges for pots, they shall be broken down: for they are unclean, and shall be unclean unto you.
I noticed this in my devotions from 2005. I think it helps you see just how wonderful the Word of God is.
If the carcass of the unclean animal get on certain surfaces they had to be broken. Salmonela is a disease that causes great problems even now, 2005, in the USA due to the dead carcass lying on a surface and then not cleaning that surface correctly.