Each bag comprises 4.5 pounds of hydrated, nutrient-rich, organic rye berries. Additionally, the bags feature a self-healing injection port for effortless use with a spore or culture syringe, along with a 0.2 micron filter patch. This patch effectively filters out airborne contaminants while ensuring smooth gas exchange. PurchaseTo inoculate the grain bag, simply inject your spore or culture syringe through the port in a sterile location. We highly recommend maintaining cleanliness by using clean hands and latex or nitrile gloves to minimize the chances of introducing any contaminants. It is strongly advised to allow at least one week from the arrival of the grain bags before injecting them. This precaution ensures that the bags were not compromised during transit. Rest assured that your purchase is fully guaranteed. If your bag was compromised, we will provide a replacement. For optimal results, we suggest using 2.5-5ccs per 3lb injection port bag. We do not recommend using an entire syringe in a single bag, as excessive moisture can lead to over-saturation. This over-saturation may result in the pooling of liquids and create an anaerobic environment, making it challenging for the mycelium to colonize effectively.