The MCH pheromone was isolated from the beetles themselves, and is known only to transmit signals to Douglas-fir beetles. There should be no impact to humans or wildlife from the installation of this product.
A pheromone is a chemical produced by an animal that sends signals to another animal of the same species. While the MCH tabs we will be using are synthetic, this technique came about from biologists who studied the beetles and isolated the pheromones back in the 1970s.
The tabs are a registered pesticide with the Oregon Department of Agriculture. If someone removed the tabs from the trees, inhaled the contents in a confined space, ingested the contents of the tabs, or otherwise interacted with the tabs in a way other than their intended use, that person should seek medical help.