My freezer is on duty as a grow cabinet at the moment for my vege seedlings (yes, just veges). Took a couple of frames of drone brood out yesterday. Left them in a spare box outside last night. I suspect as they are beeless and it was 13 degrees or whatever last night the larvae will be dead by now. Guessing the mites as well? I will pop the frames back in next fine day we have so the bees can recycle the larval protein.... Can anyone confirm that its not necessary to freeze drone brood to kill the mites in there?