Repel-X Fly spray is a ready-to-use, water-based formula. It provides economical fly protection for horses and ponies - it repels and kills horn, house, stable, horse, and deer flies, plus mosquitoes, gnats, and ticks - including deer ticks which may transmit Lyme Disease. It can be used as a spray or wiped on. | Farnam Repel-X Fly Spray | Size 32 oz