Couldn't figure that out huh? I'm not surprised--it would have been much easier to figure it out if I had actually typed what I meant to!...you're saying in the milk section and not in the ice cream section, right? i'm not sure what a fridge is vs refrig.
They go in the refrigerator, not the FREEZER. I'll go back and fix my earlier post.
When you take them out of the fridge, you should, ideally, let them warm up to room temperature for best performance. In a pinch, they'll work ok cold. You'll just get reduced runtime. Standard stuff for batteries.