MCH Bubble Caps

MCH Bubble Caps Pheromone Repellent for Douglas-Fir and Spruce Beetles

How It Works

Beetles and other insects communicate using pheromones. MCH replicates the beetle pheromone that tells other beetles the tree is full and that the food supply is insufficient for additional beetles. Arriving beetles receive the message that they should look elsewhere for a suitable host.


In U.S. Forest Service studies, MCH has proven highly effective in protecting living trees from attack. It is also used to prevent the build-up of populations on logs, stumps, and fallen trees.


How safe is MCH? MCH is environmentally safe and non-toxic to humans, pets, birds and even the beetles themselves. Always follow the instructions provided.

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MCH Bubble Caps, Synergy Shield Douglas-fir and Spruce Beetle Repellent

Synergy Shield MCH Bubble Caps, Douglas-fir Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect trees from attack by Spruce, and Douglas-fir beetles.

Active Ingredients: 3-methyl-2-cyclohexen-1-one 97.9% (500 mg)
Application Rate Range: 1 or 2 /tree, 40 /acre
Container Size(s): Min. Order 10 pcs.

State Registrations Not for Sale to: CA

Perishable Product ALL SALES ARE FINAL. No refunds, returns, or exchanges. This product is perishable.

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