haha yeah flies are pretty nasty but ususally your grains wouldn't be absolutuly crawling with them. I keep my grain in air tight dog food containers or small buckets for my specialty grains. I just meant to say when making meads the fruit flies often take over for awhile until the vinegar traps get them under control. They are certainly gross but thankfully not (visually at least) crawling all over my brewing ingredients lol.
So glad I started t use vinegar traps this year. Cheap and effective. Flies are incredibly gross. Just another reason I don't brew in the summer, as I do not want that in my wort.