Behind my house I have a solar extractor that is always ready to melt down combs that I want to replace. The frames come out nice and clean. While they are still hot after removing them from the extractor what little wax remains on them can easily be scraped off with a hive tool. I also melt down wax from frames that have been in hives with diseases and till now have given them an extra treatment by blowtorch before putting them back into circulation. HOWEVER, I was wondering, could the heat of the solar extractor be adequate to sterilize the frames without requiring additional treatment? Maybe not one day's heatng but posssibly 2 or 3? Anybody out there have any knowledge on the thought?