The use of perspective non-toxic
compounds could represent a natural alternative to synthetic antibiotics in the control of American foulbrood,
lessening considerably the contro- versies of antibiotic residues and resistance. Because of their significant growth-inhibitory action on P. larvae and their low toxicity to bees, these plant-derived products are potentially useful alternatives in suppressing American foulbrood, while being commercially available. The sub- sequent work will focus on field efficacy, methods of dosage (sugar solution, candy or aerosol) and delivery.