> ... I use oxalic by dribbling (dropping sugar / oxalic solution on > the bees)... We have not seen noticeable bad effects from > oxalic when used properly. (Data of hive strenghts from 3 years) > But you must not overdo it ! Have you any experience with applying oxalic more than once in the fall by dribbling (also called drizzling)? I heard some rumours that more than one treatment per generation of bees could have bad effects, but nothing very certain in that regard. I had also heard that multiple treatments by evaporation did not have bad effects. allen A Beekeeper's Diary: http://www.honeybeeworld.com/diary/ :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::