I don't Know if this is of any interest but for a lot of years we have had wax clubs here in Denmark to assure that wax taken into use in the bee yards were residue free. We don't wish any residue from medicine in either wax or honey! Practical all wax is bought as foundation and the supplier is voluntary bound to deliver separated manufactured foundation to the wax clubs. Best regards Jorn Johanesson Multilingual software for beekeeping since 1997 hive note- queen breeding and handheld computer beekeeping software Updated 13-09-2002 Added grouping and colouring of hives + a lot more. Each breeding queen now has its own timetable. all you need and a little more. being a little beekeeper or a big queen breeder free of charge up to 10 hives. Soon coming up handling more than dreamed out hives. home page = HTTP://apimo.dk e-mail [log in to unmask] <mailto:[log in to unmask]>