Crested Butte Mountain Resort (CBMR) in central Colorado has been dealing with a mountain pine beetle infestation for the last two years, but the Gunnison County resort is fighting back using small packets of pheromones stapled to trees.  Beetles were first detected mountainside at CBMR in 2023… During the 2024 season, ground crews revisited large areas of lodgepole pine within and around CBMR’s boundaries, confirming limited but recent beetle activity among the trees. …But now CBMR Mountain Operations, alongside rangers with the U.S. Forest Service, are fighting the beetles back with the help of verbenone pheromone packets. Verbenone is an anti-aggregation pheromone produced by mountain pine beetles to indicate a tree has reached maximum capacity, letting other beetles know there are no resources available to consume within the tree.