Paenibacillus larvae, is the most serious disease of honeybees. Laboratory were conducted to evaluate the effectiveness of essential oils from savory, thyme, lemon-grass, basil and ocimum basilicum in preventing and controlling infections of AFB in Apis mellifera colonies. Values for acute oral toxicity of the oils on adult bees verified that the essences were non-toxic or slightly toxic. (Gende, 2010; Marghitas, 2011)