I suppose a small section of queen excluder over the inner hole and a deep with queenless eggs/brood on top of the inner cover could do the trick for a vertical hive? There would be an exchange of queen scent but it would be much reduced in the top deep. Waldemar Long Island, NY >>Assuming that you do NOT put in any solid division when raising brood to the top, I would expect some pheromone still does get thru - due to interchange of nurse bees between the main queenright nest and the separated brood due to some bees travelling down the hive for cleansing flights for example - and also the pheromone coating on the brood frmames would only 'wear out' over time, not be suddenly expunged. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::