I read somewhere that the kibble should be stored in it's original bag (bc it's specially designed to prevent moisture?), in an air tight container, away from the sun & heat & be used up w/in 2-3 months. I have 4 mouths to feed, so a 12# bag is done in about 2 months...I transfer a week's worth into a container.
Found this link about freezing kibble:
Freezing Dry Dog Food