What type of natural products and stuff do you use? Probably because I'm in the aviation industry is why I've become more interested. At one of my check-ups, the doctor asked if I worked around any chemicals. I asked him what kind? When he said the hazardous kind, I asked him if he could be more specific. Since he still looked a bit puzzled, I went on to ask him questions like: "how hazardous," "open container or closed," "explosive or corrosive," "dilute with water or run like hell." Needless to say, he just shook his head and didn't ask anything more.