No idea but on a quick search, this sort of explains some more http://www.imkerplatform.nl/component/content/article/60-opmerkelijk/333-hopguard-the-new-varroa-pesticide <http://www.imkerplatform.nl/component/content/article/60-opmerkelijk/333-hopguard-the-new-varroa-pesticide>-- Juanse Barros J. APIZUR S.A. Carrera 695 Gorbea - CHILE +56-45-271693 08-3613310 http://apiaraucania.blogspot.com/ [log in to unmask] *********************************************** 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 Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm