The firmness of a mushroom affect the quality of a mushroom, mushroom of mycelial age to produce complete, that is, if the stone mushroom too tight. Mushroom fiber would be slow. Contamination of a mushroom is high, while a mushroom is too soft เส้ย fiber mushroom will lack during movement, especially the fungus If a soft bag time cut wound infections of sawdust did not match the wound plastic bags. As if too many solidified ears will not adhere to the bag.