When the raw material is not interested, a good fiber because it is too big. Expire and no longer corresponds to the current consumption of the range until becoming junk food, which is necessary to unfortunately;
When these materials are not indifferent because it is too close to the expiration date, and is not consistent with the current consumption in that period. Become a junk food which needs to be thrown away, unfortunately.
When those materials do not care, because it is too close to expire and not consistent with current consumption in that period. A junk food, which need to be away, unfortunately.