fire concerns?
Methanol is flammable, and the vapors can collect in low areas, can flash back, etc...
Anybody worried about the use of heaters and their winter/antifreeze soaps? Check out section 5 of the methanol msds:
http://avogadro.chem.iastate.edu/MSDS/methanol.htm
What (if any) precautions do you take?
I just have one of those small tank-top propane heaters, but I completely shut down my methanol FB soap when I use the heater, it just makes me nervous.
In case youre curious as to exactly how flammable methanol is, when I was a kid we made pepsi can stoves as a project on a camping trip once. (OK, they were beer cans. Yes, dad brought beer and guns and knives camping back in the 60s, and let us play with fire too.) Cooked stew, coffee, etc on them. The fuel was gas line antifreeze, which is simply expensive methanol.
http://www.youtube.com/watch?v=PN865oRI7-Q