There is disclosed an antimicrobial composition that may be used in thetreatment of diseases and conditions associated with farm animals andlivestock. The composition may also be utilised as an inhibitor of microbialgrowth on crops, plants or foodstuffs, such as grains and the like. Thecomposition comprises an antimicrobially effective amount of clove bud oil,eucalyptus oil, lavender oil, tea tree and orange oil but may be diluted withwater prior to application.