This "High Output" product features the highest 1000mg MCH load of any manufacturer's bubble cap.
MCH Bubble Caps, Synergy Shield Douglas-fir and Spruce Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect living trees from attack by Spruce, and Douglas-fir beetles. It is also used to prevent the build-up of populations on logs, stumps, and fallen trees. MCH sends a message that the tree is full and that beetles should look elsewhere for a suitable host.
Our Synergy Shield MCH 500mg single bubble lasts at least two weeks longer than a standard 400mg competitor’s bubble because of the higher load of MCH. Longer release times provide an extended window for early deployment and for insurance in the event of an extended flight period.
