A word about storing your food in 5 gallon buckets. I did most of my storage in buckets. There are advantages as well as disadvantages for doing so. Advantages: easy to transport and store. The lids are re-sealable. The 5 gallons does not represent a huge amount of food (if it were to get weevils) compared to larger storage units. After the bucket is empty, you can use a 5 gal bucket for lots of things.
Disadvantages: plastic is not perfect. Mice and rats can get into it. It may break if you put too much weight in it. It may not store food as well as other containers (leak O2 into it).
So, if you decide to store using buckets, here's the best way to do it. Use dry ice. Take a small amount (golf-ball size) and put it in the bottom of the bucket, fill up your wheat or beans and then put the lid on lightly. It will "burp" for some time. After the burping stops, seal the lid tight.
I used tamper evident lids and I am happy with the results. Be sure to label your bucket with its contents BEFORE you put the lid on.
Note: I did the majority of my storage in these buckets, but I also have many, many cases of #10 cans. I didn't want to put all my eggs in one basket- just in case. Also, the #10 cans are smaller units and better for charity/barter.
Good luck
