It's what the professional horticulturalists use in green houses.idk man, that may very well work in some countries/regions but according to the advice I got sulfur doesn't work on botrytis in my country, possibly because grey mold built up a resistance to sulfur? (I really don't know) but I've been chatting with plant pathologists in my country who said sulfur has very little impact on grey mold.
Plants need sulfur so do we, its what's used for mold. It works for lots of stuff but particularly used for molds and PM.