It is recommended that the packaging of Bokashi bran is tightly closed and air expelled out.The bokashi starter is a ‘living’ product. Store it air-tightly and until the next use, put it in a fresh, dry and dark place. Avoid digging with your hands into it.
The Bokashi bran lasts a good year if stored in optimal conditions. If you notice your food waste is not fermenting anymore as it should, try increasing the bran quantity, or buy a new bag of fresh starter.