Both bottles came from the same vehicle fire, and both were equally black with soot. I cleaned the larger bottle with the product itself, about to go clean the smaller bottle, just figured I’d share the comparison, the stuff works great for fire soot!
It’s a mild acid powder that you add water to it’s good for scrubbing metals. It will remove coatings on some pots and pans.
I just found out that just a dab of Fast Orange is also great at getting stains off of coffee cups 👍
but those stains are old friends