Earlier this summer I had pulled some un-needed frames from my hives. I wrapped them in plastic sheeting and stored them in my garage. I hoped the plastic would keep the wax moths at bay. Sadly, it did not. A few days ago I went to retrieve them and was dismayed to find wax moth larva cavorting all over 5 of them.
The way you kill the larva and eggs is to place them in a freezer overnight. This is not an easy task if all you have is a side by side freezer/fridge. I removed a couple of shelves from the freezer, placed the 5 frames into a tall kitchen garbage bag and stood it upright in the freezer. The next day I removed the frames from the freezer, shook off as many of the dead larva as I could, and placed the yucky frames back into my strongest hive. The bees are supposed to be able to clean the frames and save the wax. We'll see.