MCH bark beetle anti-aggregant flakes (U.S. EPA Product Registration No. 8730–72) contain the active ingredient methyl cyclohexenone, which is effective as an anti-aggregation pheromone against Douglas-fir beetles, spruce beetles, and certain other species.
These flakes provide a very important capability in the fight against Douglas-fir and spruce beetle: namely, the ability to protect high-value trees by allowing rapid and effective aerial treatment of forests or large tree stands not possible with the hand-applied "pouch" or "bubble cap" products.
MCH bark beetle anti-aggregant flakes can also be applied to small to mid–size tree stands or to individual trees using a variety of ground application methods at faster rates than possible with products requiring hand–stapling or nailing.
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