Which method is NOT used for termite control?

The method of termite control that does not typically involve a direct contact spray is indeed appropriate for understanding how these pests are managed.

Soil treatment is a well-established method where chemical barriers are applied to the soil around and beneath a structure to prevent termites from entering. This method creates a protective zone that disrupts the termites' contact with the structure.

Foundation treatment involves applying treatments directly to the foundations of buildings, which helps to deter these pests from starting infestations at the initial entry points around and beneath the structure. This could include using physical barriers or chemical applications specific to the foundation.

Wood treatment focuses on applying protective solutions directly onto or within wood materials, making them less palatable or inhospitable for termites.

While direct contact sprays may eliminate termites on contact, this method is not a standard practice for comprehensive termite control. Termites tend to be located in hidden areas, and sprays may not effectively reach infested wood or underground colonies. Therefore, the correct answer recognizes that direct contact methods are generally not relied upon as a primary strategy for termite management.