Same here with my fish having no class. They don't turn up their nose to any kind of feed to date.
The Pond Boss conference was a success and I came home with the two 50# bags of Optimal BG feed that Optimal donated to the hurricane benefit auction.
Right after I ordered some from Esshup......
Hope my fish stay hungry for a couple more months.
I have found the fish food keeps good once weather turns cold (I store it outside at ambient temperatures in a shed) and I keep it in sealed plastic barrels. I have kept a few bags over winter and the next March when I started feeding again it smelled and felt fine and the fish ate it. I would not be comfortable storing it that long in hot weather, but during winter it works ok.