These huge beetles attack primarily dead trees, and they are some of the first insects to enter a dead tree to begin the decomposition process. There are also reports of infestations in power poles, as well as the common occurrence of them in structural wood members, where their presence is due to infested lumber used in the construction. They will not re-infest structural wood members once they emerge as adults. Conifers are the woods infested, and the larval stage may easily take several years to complete, with up to 7 years possible. Once they emerge as the adult beetle they will bore through any material between them and the light they seek, including sheetrock, paneling, linoleum, or tile. Adults are attracted to lights, and may occur in or around structures due to this.
No control normally will be needed, although repairs to surface damage of walls or floors will be required. In most cases only one to a few beetles will be in structural wood, and it does not warrant a fumigation. The best advice is to let the problem run its course and fix the holes that are made.