W.G. Miller wrote: On how long must Apistan be out of a colony before the start of the honeyflow, I have heard various answers ranging from "pull strips when you put on the supers" to "28 days". The Apistan label does not specify a waiting interval; only that the strips must be out before honey supers go on. The Waiting Period for Apistan in honey producing colonies is zero (0) days as the active ingredient, tau-fluvalinate is hydrophobic - it will not pass into water or water-based materials from the Apistan formulation. You ARE likely to get residues in honey however, if the insecticide Mavrik is illegally used in place of Apistan, as Mavrik is a water-based preparation itself and will mix more readily with honey. If you're more comfortable in taking the strips out a few weeks before the honeyflow, that's fine but you should not be wooried about tau-fluvalinate residues in honey, providing the Apistan strips are used according to label directions. Dr Max Watkins Technical Development Manager, Sandoz ______________________________ Reply Separator _________________________________