With all of the recent black friday deals for grain (free shipping, etc) I purchased 4 50-lb sacks of grain (munich, briess, etc). Whats a cheap + good way to store the grain? Vittles Vault Stackable 60lb containers with screw on lids look nice and the screw on lids will keep out insects but they are $50-60 a container. 5 gallon bucks with snap on lids are cheap, but i'm worried they won't keep out insects. Any suggestions?