ORIGINAL: Jezmo
Just to make sure we keep the record straight, it is ''Ethanol'' that must be ''Denatured'' by law in order to be sold commercially for purposes other than human consumption. ''Methanol'' is naturally poison and will cause blindness if taken internally (It needs nothing added to keep you from drinking it other than the knowledge that it can blind you and other very serious health issues). Ethanol is the alcohol found in Liquors, Wines and Beer etc.
Evidently, based on what the supplier told me, is Methanol must be denatured as well. "All methanol sold in the United States must be denatured to basically make it taste bad so people don't drink it." Methanol in its natural state is looks and tastes like alcohol, albeit maybe a worse flavor than a cheap vodka perhaps. Of course, those in the know will be aware of the adverse effects if one drinks it, but a wino walking down the street isnt going to know the difference.
I'm just going off what I was told by the supplier. I will do a little research later today when I have more time to find out what the regulation really is.