Max Yield Bins Colonizer Lid ONLY - Case of 3Max Yield Bins Accessories offer additional improvements to your bin during various stages of the mushroom life cycle. MAX YIELD BIN COLONIZER LID Speed up colonization rates in your substrate with the Max Yield Colonizer Lid. Attaches directly to your bin during colonization and is replaced by the traditional lid during the fruiting phase. USAGE: Colonizer Lid: Attach the Colonizer Lid after inoculating the substrate. Replace with the traditional lid