Rye flour infestation and solution
Several months ago I noticed "threads" in rye flour right at the top of a new bag. I think I had seen those before and ignored them, but this time I wanted to find out what was going on, so I took the threads and a little more flour and rinsed them in water. Sure enough--I had something on the order of moth larvae. This had been a bag of Romanian rye flour from a Russian import store and I was quick to place the blame there. So, I bought a bag of Hodgson's Mills rye flour and...the exact same thing happened. After that I assumed that rye flour is not bought by many people in my location (VA), so it probably sits on the shelf and gets infested.
My solution? I have been buying whole rye grains since then and doing my own grinding. No bugs or larvae in the whole grains so far. I get a good grind by first running it through a Marga mill to get a coarse grind, a little like Schrot. The it goes into a Vitamix and almost instantly becomes decent rye flour. I could use the Vitamix for the whole grain, but I thought it might damage the plastic container. Besides, the Marga manual mill is great exercise and the grinding after that is very quick and efficient.
I wonder why flour is packed in such leaky, primitive paper sacks. Couldn't they seal it in large round boxes like oatmeal? Wouldn't that cut down on insects getting into the sacks?