The last outbreak of mountain pine beetle affected more than 27 million hectares of forest in western North America. This outbreak enabled further development of the semiochemical verbenone, a compound discovered in the late 1960’s that is the antiaggregant for mountain pine beetle. Verbenone sends the signal “this tree is unsuitable for further colonization and to seek another host”. We will discuss recent research to further develop verbenone as a management tool for mountain pine beetle and new products resulting from this work.