a method and system for storing of a bulk commodity utilizes a flexible , low air - permeable sheet material enclosure in which the bulk commodity is hermetically sealed . the atmosphere in the sealed flexible sheet material enclosure is evacuated to establish a vacuum therein . the vacuum is maintained during at least a portion of the storage of the commodity to ensure a significant reduction of the commodity . the temperature of the commodity is maintained sufficiently high to ensure substantial total kill of infesting insects within a desired time period . at least a portion of the commodity can be removed from the enclosure by opening a hermetic seal therein .