There was termite damage to the rear wall of the garage. During my inspection, I determined their route to reach the sheetrock wall. They were entering underneath the siding. Technically, although we say that termites eat wood, what they are really after is cellulose - the soft white carbohydrate inside a tree that forms the basic structure of the tree. Termites not only eat trees, they will eat any of the many processed building materials that we make from trees (and other products like cardboard boxes). The sheetrock in our home, even though it is largely made from gypsum, a non-edible mineral, it is covered with paperboard that contains loads what the termites are after - cellulose.
To resolve the infestation, I drilled a series of holes through the garage floor so that I could directly access the soil underneath, allowing me to inject a liquid termiticide under the concrete slab. To ensure that my treatment reached these underground-dwelling insects I also drilled the hollow blocks of the foundation and rodded the soil along the exterior perimeter. Finally, I drilled and treated the garage doorjambs.
Once a termite has contact with this liquid application as it moves through the soil, it transfers it other termites. These termites then transfer it to other termites in the colony. The product just keeps spreading among the termites and killing them. Before long, the entire colony is eliminated and the real objective of termite treatment- stopping any further property damage - is achieved.
Recently, I treated a garage for a homeowner in Atlantic Highlands, NJ that had significant termite activity. Garages are notorious for being susceptible to termite damage. Most garages are built on slab foundations, which are more prone to termite damage than crawl spaces or basements because the expansion joints, cracks, and wooden structural members are much closer to the ground. Termites have a knack for seeking out wood, and the easier it is for them to reach, the better.