This last batch of feed I didn't inspect, then found them on feed can later.I know, and feeding chickens there will be grain allover the place won't there?
They sometimes even come with cereals or granola packages, oatmeal packages, sesame packages etc. etc.
And even with flour packages as well.
I checked feeders and saw none there.
Never saw these type of grain mites in human food packages, grain moths and weevils yes. I keep my bulk grains and flours in the fridge.