FGMO

A 3rd-year beekeeper I met recently claimed success at knocking down mite counts by fogging with food-grade mineral oil (FGMO).  Beesource has a thread discussing it, with the OP who tried fogging for a while and eventually converting over to oxalic acid vaporization (OAV).  There's also a link to a 2004 USDA study on FGMO that declared it ineffective.