Food storage - freezing

I have been using my large chest freezer as a cool room for storing my grains and dry goods. In this humid climate, especially in summer, it's truly been a very good way of making sure bugs and mildew don't spoil our food and thus we avoid wastage. Using the freezer this way I wasn't concerned if the electricity went off, I knew that no matter what, that food would be fine.However, since we