This is a preventive measure that a lot of general and local contractors recommend to home owners. This is done by using liquid termiticides. Other options for pre-construction includes covering the soil with sand, gravel, plastic or wire mesh to serve as physical barriers against termites.
Another pre-construction treatment is the installation of bait stations in some soil and in lumber. Construction workers place a borate solution to the lumber so that it would be strong and toxic enough to termites.