Since its introduction into the U.S. in the late 1800s, the horn fly has become a persistent challenge for livestock producers in pasture-based systems. For beef and dairy operations, horn flies are more than a nuisance; they contribute to measurable losses in weight gain, milk production and overall animal performance.

Horn flies are a nuisance to cattle performance and a burden on producers’ bottom lines. Each year, lost production caused by horn flies costs the cattle industry approximately $1 billion, and in today’s market, reducing preventable profit loss is key.