With the oxalic acid vapor this treatment is for sure the safest, you will reach 100% all bees in the colony and no site effects. Drizzling is danger to bees and queen. Vaporizing is like staying in the fog and drizzling like getting one or two bucket acid water over your head. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::