Horn flies are relentless parasites, feeding on cattle up to 40 times per day. When populations surpass the economic threshold of just 200 flies per animal, they begin to inflict significant damage. Left untreated, infestations can climb to 4,000 flies per animal, resulting in thousands of bites, reduced grazing, and elevated stress.
Even at 700 flies per animal, a herd of 100 cattle can lose 200 gallons of blood over a season, that's 6.67 pints per day. Beyond the physical toll, this constant irritation interrupts feeding patterns and causes cattle to group tightly, expending more energy and consuming less feed.
The Consequences:
- Reduced weight gain
- Decreased feed efficiency
- Lower milk production and quality
- Teat lesions
- Potential mastitis from Staphylococcus aureus transmission
- Reduced calf weaning weights
For beef cattle producers, horn flies are more than just an irritating pest. They're a serious economic threat. Every year, these bloodsucking parasites cost North American producers an estimated $2.3 billion through reduced weight gain, decreased milk yields, and overall herd stress. But the true cost of a horn fly infestation can be seen in your bottom line and in the performance of your cattle.
Why Altosid® IGR is the Smarter Solution
Altosid® IGR offers a proven, long-term solution. Unlike adulticides, Altosid® IGR targets horn flies where they start --- in the manure. Female horn flies lay their eggs in freshly deposited cow manure, and Altosid® IGR works through the feed to prevent those larvae from developing into adults.
What makes Altosid® IGR stand out:
- Controls horn flies resistant to traditional insecticides
- Over 30 years of use with no known insect resistance
- Easy-to-use feed-through application
- Provides a 10:1 return on investment
A Smarter Strategy for Fly Control
Altosid® IGR helps break the life cycle of horn flies before they become a threat, reducing both irritation and economic loss. When integrated into a comprehensive fly control program, Altosid® IGR allows your herd to stay focused on what matters most: grazing, growing, and gaining.
