From the information leaflet on disinfecting hive components by the UK's National Bee Unit: "D. Chemical sterilisation with acetic acid. Combs can be sterilised to destroy the spores of chalkbrood, wax moth, and Nosema spp. disease of adult bees by using the evaporation fumes from acetic acid. There is no evidence that this treatment is effective against AFB or EFB. " Full text is most informative: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=2ahUKEwiI0uiR5uTiAhULrp4KHXy1BJ4QFjACegQIAhAC&url=http%3A%2F%2Fwww.nationalbeeunit.com%2FdownloadDocument.cfm%3Fid%3D423&usg=AOvVaw1xDOLAZvz5RGbbCvj0xqHy *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html