What is the general requirement for soil treatment regarding final grade?

Soil treatment for termite prevention is typically required to be conducted after grading has taken place. This is because grading alters the soil profile and structure, which can affect the effectiveness of the treatment. Once the final grade is established, it is critical to apply the soil treatment in order to ensure that the chemicals penetrate the soil properly and provide an effective barrier against termites. Doing it before grading could lead to disturbances in the treatment application, compromising its effectiveness once the soil is disturbed for construction. Thus, conducting soil treatment following the establishment of the final grade is standard practice to ensure optimal results and protection against termite infestations.