In this weather I could put the food outsideI don't feed fry either, but every bag should have an expiration date on it. I wouldn't feed anything past the expiration date. Also, I've always heard it's best to store it in the original bag, but would definitely secure it somehow, with clips or inside another bag or something. And I think storing it in the fridge or freezer sounds like an excellent idea, too not only ward off mites (eww), but to keep it from going rancid, particularly if there are any fishoils in it.