Pet food quantity - large package or small package?

Depends what I'm buying. I buy the largest package/best value I can get without that amount of food going bad/drying out before I can use it. I pretty much use that mentality with cat food, frozen rodents, live insects, fish food, whatever. I have stumbled on a few things. If you go to target or walmart, you can buy the same type of airtight food storage containers they sell at places like petsmart for 1/4 - 1/2 the price. They seem to keep the food looking and smelling as good for at least 3 weeks. Same with rodents, I use either a local rodent breeder that euthanizes the rodents while I'm there, or a closer smaller frozen rodent supplier, (for anyone reading this, I strongly recommend not using rodent pro.) And figure it so I am through them in at least 3 months. I mostly use frozen fish food, though I would have to admit some of the dried fish foods have been around a while, as they are mostly a "just in case" type of scenario.