Cleaning/ winter care of flow frames

I keep getting asked from our local big traditional beekeeper how I’m going to clean it for next year because it will harden up.
And I don’t know the answer to that.
I’ve just taken The flow box/ frames off and made my bees go back to their two brood boxes and now I need to know how to care for the flow frames for wintering.

2 posts were merged into an existing topic: Wintering the honey super