Hi All Just a note - keeping supers at low temperatures does not kill yeasts and fungi neccessarily. We have a lab contaminant growing in our walk in freezers that grows at 2C (two degrees above freezing). This is a dark green fungus that can in a week cover an area about the same as a hand. (it has a temperature range that it can grow on ranging from 2C to 28C near body temp) The best way to keep supers free of yeast and fungi is to make sure they have nothing easily fermentable in them. One wants to avoid having yeast spores etc in your supers as this may lead to the bees not always being able to cure honey completely. Keep well Garth Garth Cambray Camdini Apiaries Grahamstown Apis mellifera capensis Eastern Cape Prov. South Africa Time = Honey After careful consideration, I have decided that if I am ever a V.I.P the I. may not stand for important. (rather influential, ignorant, idiotic, intelectual, illadvised etc)