Which treatment method involves applying substances directly to the foundation to manage termites?

The process of applying substances directly to the foundation to manage termites is best described by the term "Foundation Treatment." This method specifically targets the area where termites often gain access to a structure, focusing on the foundation's perimeter to create a protective barrier. This treatment can involve various techniques and substances, including liquid termiticides, to ensure that the termites cannot enter the building.

Foundation Treatment stands out because it directly addresses the critical entry points for termites, as many infestations begin in the soil surrounding foundations. By implementing this treatment, pest control professionals can effectively minimize the risk of termite intrusion and protect the integrity of the structure.

In contrast, soil treatment generally refers to the application of pesticides into the soil before any buildings are erected or around existing structures but does not specifically highlight the foundation aspect. Wood treatment focuses on protecting wood structures from infestation rather than the areas where termites enter. Surface treatment generally indicates that the substances are applied to visible areas rather than focusing specifically on the foundation, which is vital for preventing subterranean termite access.