If I am not breeding queens at the time then this is OK. I believe I read in an Entomology journal of research performed in the early 90's showing problems with coumophous and queen laying. thop Bradley Blane White wrote: > An article in the American Bee Journal Feb. 1999 reported that > Apistan treatment did have negative effects on drones reared while > treatment was in the hive. > conclusion of the article was to not have the strips in the colony > during drone production. > > blane