Our maximum strength DEA-free XTREME Shield is an all natural equine fly spray that repels and kills stable, horn, face, horse and deer flies, plus mosquitoes, gnats and bees. This non-irritating product contains a blend of natural herbs and oils plus a special ingredient that has been found to be more effective than anything else on the market. · Lasts up to 40% longer than the competition · Super-Concentrated formula makes it economical to use · Equine use only