The buckets I'm going to be using say:
Food Grade
Heavy Duty
BPA Free
Are these air tight once the lid is hammered on?
One or two O2 absorbers in these? (These are the 2 inch square packet absorbers)
If using Food Saver vacuum sealer bags, are O2 absorbers really needed in those buckets that the vacuumed bags are stored in?
Does it make any sense at all to store canned goods inside sealed 5 gallon buckets?