No means an expert on this, but there seems to be two sides to this debate. Some will never use galvanized, and some do not care if they use it or not. Now, the ones who do not care seem to fall into two sides as well! Some believe(maybe rightly so) that the toxic effect of the galvanized happens at too high a temperature to be a concern, or that there would be minimal exposure even if there was toxicity. Meaning, that the temperature needed for toxicity is not reached in the drum smokers. As for me, not being a chemist or physicist, I do not really know the truth on the subject. But I think living in NJ/NYC area for most of my earlier life before I made it to TEXAS was FAR more TOXIC to my being than what a few screws will kick off!