From: Chris Slade <[log in to unmask]> > I'm not sure that this would necessarily have the effect you assume. > Aren't you just selecting for resistance to 2 chemicals rather than > one if you continue to use fluvalinate annually? I realize I wasn't clear there. Should have said I made some random tests with oxalic to make sure fluvalinate is still working. No, I wouldn't use 2 different treatments if the first is working. -- Regards P-O Gustafsson [log in to unmask] http://beeman.se -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---