Food Containers
I have a feed bin for the girls that stay in the living room with me. The boys have their crates in the back bedroom, with food bowls and water pails in each crate. I get the food in 20 pound bags, and one bag pretty much fills all the guys bowls, which lasts them for several days.
The feed bin can hold up to 25 pounds, and the girls empty it about every 4 days. The idea is that the food needs to be surrounded by air so that it does not go rancid. Even the bags it comes in are not air tight. A fellow from Purina gave a talk to our Dobe club, and he was the one who recommended keeping the bags of food inside a trash can. That way the food would be safe from rodents and bugs, but would still have the needed circulation of air.