My shipment of flavor concentrates from wizard was scheduled for delivery last Friday but due to extreme weather my building hasn't received any mail since then, meaning my package is most likely sitting in some truck somewhere exposed to subzero degree temps for four days now. I'm sure they are frozen solid and hopefully the little glass containers haven't burst. I've heard you should store flavors at room temperature and not refrigerate them, so my question is when and if I finally get them, do you think they're even going to be usable after being frozen for so long? Will the taste be diminished? Anyone with any experience with something like this have any advice?