What type of soil treatment is commonly used to prevent termites?

Trenching with liquid termiticides is an effective method used in soil treatment to prevent termite infestations. This approach involves digging a trench around the perimeter of the building and applying a specially formulated liquid termiticide into the trench. By creating a barrier in the soil, this treatment helps to protect the structure from termites by killing or repelling them before they can reach the foundation.

Liquid termiticides are specifically designed to remain in the soil and provide long-lasting protection, ensuring that termites do not establish a colony near the home. This method is particularly useful because it addresses the termites at their point of entry and effectively creates a protective envelope around the structures.

The other options do not provide effective protection against termites. Watering with salt solutions, while potentially harmful to plants, is not a scientifically proven method for deterring termites. Spreading mulch around the foundation can actually attract termites, as they are drawn to the organic material. Applying granular pesticides may not adequately penetrate the soil or offer the same level of effectiveness as liquid termiticides, making the trenching method the most reliable choice for termite prevention in soils.