We are having a really hard time finding a truly airtight bin large enough to keep at least 50 lbs of bulk grain in. Does anyone have any suggestions? We keep our grains in the shed and want to keep out mice and bugs.
Homebrew Finds has a nice roundup of all the options. I use food-grade 5 gallon pails and Gamma lids that I got from Menards (the cheapest way to go that route, if you have a Menards nearby), and I've never had problems with bugs.