Regarding the story, Beating The 5 Enemies Of Long-Term Food Storage
High quality food grade plastic buckets with air tight seals can be had from Dunkin Donuts which ships donut fillings in them. The buckets need to be thoroughly cleaned before use. These can usually be bought for a buck or two each from the Dunkin Donuts facilities which do baking on premises.
Supermarkets often stock large size plastic bags with air tight closures. For another project I inquired and the manufacturer replied that for the sake of economy they made the 4 or 5 gal. bags on the same production line as smaller sized food grade bags I forget the manufacturer in question, and if large bags are bought it is best to verify this with the particular manufacturer.
Plastic trash bags ARE NOT SUITABLE for food storage because according to the manufacturers they contain perfumes.
Thanks for the tips and for letting us know this! This subject is definitely one that interests our readers.