I have seen rice stay without any problems for more than a year. It was dried under hot sun for hours before storing. Most likely, the extreme heat took care of

I have seen rice stay without any problems for more than a year. It was dried under hot sun for hours before storing. Most likely, the extreme heat took care of the weevils and the lack of moisture had a protective effect on the rice. They take the rice out and soak it (as in soaking, not washing) like beans before cooking. Probably for re-hydrating it.