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Sue, you need to do a search on "diatomaceous earth" on this site. You will learn of the PERFECT solution to storing wheat outside of a refrigerated environment--and cheap too with so many other health benefits.

Yes, flour, wheat, rice, pasta, etc. can be sterilized if you have it at 180 degrees for 20 minutes or more. But if you use the DE in your storage efforts, you shouldn't need to mess with that.

I'm such a preparedness geek, that I actually find myself excited at the prospect of you learning of this solution. :-)