Good day to all: In my quest to inform myself about breeding bees in general I came upon the following sites since my interest lies somewhat in things that affect the genetics i.e reproductive aspects of our bees. We all either buy or raise queens. These in turn were "serviced" by drones. Apistan is Fluvianate Fluvinate is a Pyrethroid Pyrethoids are endocrine disruptors. read on and put two and two together yourself. Are the reproductive systems of our queens and drones healthy ; let alone worrying about human consumption since it was pointed out that detection limits take care of that end ? Pyrethroids _http://npic.orst.edu/factsheets/pyrethrins.pdf_ (http://npic.orst.edu/factsheets/pyrethrins.pdf) Endocrine disruptors _http://www.nrdc.org/health/effects/qendoc.asp_ (http://www.nrdc.org/health/effects/qendoc.asp) _http://www.hclrss.demon.co.uk/class_insecticides.html_ (http://www.hclrss.demon.co.uk/class_insecticides.html) pyrethroid ester insecticide _http://www.hclrss.demon.co.uk/summ_insecticides.html_ (http://www.hclrss.demon.co.uk/summ_insecticides.html) Walter Ontario -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---