I had an infestation of wax moth when I stored some frames with comb in and went on holiday. Although the boxes with the frames in were closed up and covered, some moths obviously escaped when I discovered them, and are moving into other stored frames. I know, silly me! I have a product called Certan which is said to protect frames, but can I use this product on "wet" comb that has the residue of honey after spinning, which I intend to give back to the bees along with a syrup feed?
I've never used Certan so I can't comment on it. I have had wax moth - and this year I've had more than I wanted! I forgot that there was a bag of a few old combs hidden away in my bee shed which is generally bee-tight and moth tight. However, as you would imagine the bag was a breeding ground for the moths and by the time I realized what a numpty I was, they were all over the place.
For me, once supers have been licked dry by the bees they are put in a chest freezer for a day or two before storage. With the hope that nothing will get in them until spring.