Feed through fly control for horses prevents the development of stable and house flies in manure of treated horses; stops immature flies from developing into biting, breeding adults. Fly growth regulator, LarvaStop, breaks the fly life cycle by preventing the formation of fly larvae's exoskeletons when they molt. Start feeding SimpliFly early in spring before flies appear and continue feeding throughout summer and fall. For optimum fly control, use in conjunction with premise and on-animal products. SKU: 15230 SimpliFly reduces the fly population by 97-100%. Highly Palatable Contains 0.24% diflubenzuron and no organophosphates Dosage: 1 oz per 1,100 lbs body weight daily Can be top-dressed or mixed with total ration 3.75 lbs = 60 day supply 10 lbs = 160 day supply 20 lbs = 320 day supply