BioBag is strong and sturdy, but eventually does break down as intended. This is exactly what we want them to do, but it does present a small challenge that our customers should be aware. For best results, use within one year of purchase, and store in a cool, dry place. At GreenLine Paper Company we carefully keep our BioBag inventory rotated & fresh, so while products may last longer than a year from your purchase date, it is best to make sure you rotate and use BioBags within that time window.