I have heard that if you put flour and such in the deep freeze for about a week, let thaw and wait 3 days and freeze again that it kills any bugs and allows eggs to hatch, and thus the re-freeze a few days afterward to kill off any stragglers that may hatch after thawing before they have a chance to lay more eggs before sealing in the mylar bags.
But then again, the O2 absorbers would make life difficult or impossible even if they did hatch, so maybe that is an unnecessary step for nothing but I don't see how it would hurt anything.
I only know of one store that sells dry ice near me.
And truthfully, I don't know a lot about dry ice.
I hear a lot of people talk about putting back this and that, but seldom do you hear anyone putting back salt, which is a necessity for normal body function.
I have also heard that regular Iodized table salt only has a shelf life of about 5 years due to the iodide additives and why I am looking for straight salt that hasn't been treated, which being a natural mineral/element has a much longer shelf than I do. LOL
As for wheat, I have seriously considered buying a hand crank mill for corn I grow and maybe as a side job (
), but wheat itself takes a lot of space to store and by the time you crush it up in powder form that doesn't take up near as much space.
Plus lately, I have been having to cut back on my wheat/gluten intake due to some ongoing stomach problems and it seems to be helping a little.
Baking powder and a few simple spices is something else I am thinking of buying a few bottles of. And the dried yeast is a very good recommendation. But it being a "live organism", I am unsure how to properly store them. I suppose that will be my project at the library tomorrow.
And not for food storage, but borax is another useful item to have around. It can be used as laundry soap, additive for making candle wicks using twine, etc.
To my knowledge, rubbing alcohol also has a lot of various uses, is relatively cheap to buy, and if stored in good conditions will also last virtually forever.
Those are just some of my rambling thoughts.