Ray,
Shelf life on these products is extremely critical. Both the Biota Max and MycoGrow are of a portion size that I would use within one Season. For me, having something that covers 10 times the area (plants) that I need to treat does me little good, as saving it for next Season is not a good thing.
BTW, I lived at the end of Transit Road many years ago in Orchard Park, not too far from you.
Raybo