ClariFly® larvicide aids in controlling house flies and stable flies in confinement-housed dairy cattle. ClariFly works by disrupting development of the fly’s exoskeleton (external skeleton) in immature flies, killing them so they do not become adult flies. The recommended dosage of ClariFly is 0.10 mg per kg of live bodyweight per animal per day. Start feeding Clarifly early in the spring, 30 days before flies begin to appear, and continue feeding throughout summer and into the fall until cold weather restricts fly activity. To minimize the number of over-wintering pupae, feed Clarifly 30 days past the first frost.
Other items to consider in an integrated pest management plan include premise insecticide sprays, fly control tape and traps, pour-on fly control insecticides, fly bait poisons, and fly parasitoids. With a fly control strategy in place, your calves can have less exposure to disease and more energy for health and performance.
Contact your consultant to discuss fly control strategies for your dairy operation.