Altosid® IGR | Horn Fly Control

Diminish Possibility of Swarms

Horn flies hurt your cattle – and your profits.
Altosid^® IGR is a feed-through insect growth regulator that interrupts the horn fly life cycle in the pupal stage, preventing the emergence of biting adult flies that eat into your beef cattle profit margins. Ready to do something?

Diminish Possibility of Swarms

Spring into Action with the 30/30 Program

As winter gives way to spring, it's important to start thinking about fly control. With warmer weather comes the emergence of many pests, including flies, which can cause health problems for humans and animals alike. By adopting a "30/30" approach, producers can get ahead of fly populations in the spring before it exceeds the economic threshold.

Horn Fly Population Guide

How Many is Too Many?

An effective control program keeps horn fly levels to fewer than 200 flies per animal. This at-a-glance guide will help you easily evaluate the effect that horn flies currently have on your herd. It’s easiest to make the most accurate estimate in the morning, when horn flies are on the upper sides of the cows.

So Effective. And So Easy to Use.

To achieve effective, cost effective horn fly control with Altosid® IGR, just follow these simple instructions:

To maximize beef cattle in a cow calf operation, begin feeding Altosid® IGR to your cattle before horn flies appear in the early spring. Continue to feed Altosid® IGR during the summer months and then into fall. One general rule is to feed 30 days before average daily daytime temperatures reach 65 degrees and 30 days after the first frost in the fall. We call it the 30/30 Program, a proven strategy for achieving economical horn fly control.

If mixing Altosid® IGR with free-choice feeds, such as mineral supplements, put out a five- to seven-day supply and protect it from the rain.

To ensure cattle are consuming enough of the feed-through fly control, use one feeder for every 15 to 20 animals.

Keep the horn fly control supplement accessible to cattle by placing the feeders in areas where cattle congregate, such as near watering holes or loafing areas.

Check feed consumption for a few days. Increase or decrease the number of feeders, or move them if necessary, to allow for proper consumption. When used as directed, Altosid® IGR alone usually provides excellent season-long horn fly control. If fly populations exceed acceptable levels due to migration from untreated neighboring herds, use an approved adulticide, such as Prolate/Lintox-HD™ Insecticidal Spray & Backrubber for Livestock to decrease the fly population.

Diminish Possibility of Swarms

Diminish Possibility of Swarms

Spring into Action with the 30/30 Program

Horn Fly Population Guide

How Many is Too Many?

So Effective. And So Easy to Use.

To achieve effective, cost effective horn fly control with Altosid® IGR, just follow these simple instructions:

If mixing Altosid® IGR with free-choice feeds, such as mineral supplements, put out a five- to seven-day supply and protect it from the rain.

To ensure cattle are consuming enough of the feed-through fly control, use one feeder for every 15 to 20 animals.

Keep the horn fly control supplement accessible to cattle by placing the feeders in areas where cattle congregate, such as near watering holes or loafing areas.

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