There is nothing the Superfly that could "go bad" in less than a year even under pretty crappy storage conditions because of the lack of significant fats and protein.
I would look to environmental factors in the finished cultures as the problem, not the stored dry product. It might be a good idea to start with some new flies from an outside source in the event that you have something funky in your cultures that the flies are taking with them to the new container.
Allen
I would look to environmental factors in the finished cultures as the problem, not the stored dry product. It might be a good idea to start with some new flies from an outside source in the event that you have something funky in your cultures that the flies are taking with them to the new container.
Allen