On Friday, January 1, 2021 at 7:10:27 PM UTC-6, wrote:
....
> I didn't look at the links, but oven cleaner is typically lye based. I use lye to clean
> my bathtub because (I assume) it is the original 1925 porcelain bathtub, and
> over the decades it has been scrubbed with abraisive cleansers. I buy pure
> sodium hydroxide, and know how to use it safely.
>
> --Bryan

I buy the Easy Off Fume Free stuff, which still has fumes but not nearly as bad!

John Kuthe...