Troy Repel-X Insecticidal and Repellent Spray offers proven fly repellency up to 12 hours and effective repellence of other biting insects up to 4 hours in horses, dogs, cattle, and pigs. Active Ingredients: 20 g/L DIETHYLTOLUAMIDE, 5 g/L CITRONELLA OIL, 2 g/L PYRETHRINS. Also contains: 8 g/L PIPERONYL BUTOXIDE (SYNERGIST) Available in a 500 mL spray plastic bottle.