A cautionary note regarding various masa and corn products. Buy close to your needs and watch best-by dates on dried corn products. In our (recent) experience, they are a favorite host for pantry moths, eggs and larvae, and easily enter your household unnoticed in packaged goods, grains and grain products preferred. I have tossed some 20 pounds of masa, corn meal and polenta in the last several months. And I'm not winning. Once introduced to your larder, they are uncomplaining guests who happily accommodate themselves with what's available after you get rid of the original product they came in in.
We think we are rid of them, only to find we are just between birthings. This morning, husband announced that he killed 4 before breakfast and is sure we are at the beginning of a new cycle.
They prefer whole foods, not white flour, altho they will go for pasta, maybe the egg, and dry cereals. We have opened brand-new 'Cheerios to have a moth fly out of the sealed plastic inner bag. They readily chew through plastic. Our pantry looks like a glass and tin forest.