What exactly is your argument here? I use Dawn; it doesn’t appear to affect my cast iron pan. Many people online use it to clean their cast iron with no ill effects.

I mean, they use the stuff to clean off ducks after oil spills. I suspect whatever concentration it has is not high enough to have any caustic effects.

So clearly it does take “much.”

Does this also apply to the caustic and corrosive ingredients in a soda?

It’s phosphoric acid, doesn’t make much, yet it’s safe to drink. See how fucking moronic that argument is you muppet?