Count "4" -2 lb mushroom grow kits "bulk". All kits are made professionally "made to order" sterilized rye grain and distilled water. They include an injection port for liquid culture and a air filter patch for ensured sealed sterility.
Kits are pressure cooked at 15 psi for at least 60 minutes or longer. We use a clean room to pack and seal all of our bags. If your kit fails and you think it was our fault let us know, send us pictures, tell us about it. We will replace any kit for free if you show us what's going on, we might even give you a better deal if you wish to be a repeat customer. We want all of our customers to succeed in their projects and you can hold us to that. This item is made of rye grain, distilled water and sterilized.