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!
I love that shit. Apparently in mechanics' circles there are similar products out there, and a bunch of people bicker online about how it's not as good as some other products out there. I saw this video a few years back, but it didn't sway me. Fast Orange has been great to me.