When I get ready to use that food, I'll rinse it if appropriate, or just knock most of the dust off, if I'm going to grind a grain.
/johnny
From what I was reading, the stuff is good for you if ingested in small amounts. De-worms and de-parasites you and provides minerals. We know that moth quite well. Good to know we have something to go after it.
D.E. works with beans and grains. What do you do for sugar?