A friendly reminder: Whole/stone ground/steel-cut grains and cereal meals do not keep indefinitely. They contain the germ which contains oils and they can oxidize and go rancid if left around too long in a warm environment like a kitchen. Either buy only as much as you'll use in a couple months, or keep it in the freezer.
Also: Cardboard containers like those for pasta and oatmeal are not airtight...
I almost got a little extra protein in my oatmeal this morning. I stopped to pour myself a cup of coffee and noticed that there was a lot of chaff rising to the top... and that the chaff had legs.
[I think it's a tiny weevil; that thing in the left corner is a rolled oat. Yes, I know steel-cut oats are better for you.]