Amazon.com : Sterilized Grain Bag with Injection Port | Fast Colonization, Robust Mycelium Growth | Grow Your Own Edible Mushroom at Home | 3(lbs) : Patio, Lawn & Garden
Sterilised Grain Bag with Injection Connection 1.4kg : Amazon.de: Garden
Mushroom Grow and Spawn Bag w/ injection site – 2lb Sterilized Rye – Everything Mushrooms