Fly spray contains 0.40% Pyrethins and Piperonyl Butoxide to kill and repel horn, house, stable, horse and deer flies, mosquitoes, gnats and deer ticks (that may carry Lyme disease) on horses and ponies.
Dilute 1:7 with water or 1:4 depending on the severity of problem. Spray up to 8 oz per animal depending on size. 1 application lasts 3-4 days.