How to store food and rice – long term storage. Doomsday and urban survival prepping for beginners. Put rice in 5 gallon buckets (food grade). You can get these from Lowe’s or Home Depot for about $4. Make sure to freeze the rice to kill all the bugs or eggs in it. Then let the rice dry out. And store in buckets. They say this rice is good for 20+ years if you store it right.