Those posts that I've seen say it works.
I'd be sure to use the heavy duty stuff, sodium hydroxide or lye is the key ingredient.
Maybe start with the lid and see how it goes. That stuff is very corrosive too so wash clean and try to season the metal real quick if you get it down to bare metal.
A bottle of lye made into a paste might cut down on the fumes, but of course be very careful and use heavy gloves and don't breathe the stuff.
And have somewhere to dump the caustic wash water.
Could be a lot of trouble - so you could just do like Marty says ^^^.
[COLOR=green][B]XL BGE[/B][/COLOR], NBBD Offset, 3 Weber kettles, gas and electric cabinet smokers, and a few smoker projects waiting