When trenching around a building, how deep should the trenches be?

The correct depth for trenches when performing trenching around a building is typically around 6 inches deep. This depth is generally sufficient to facilitate the proper application of termite control substances such as liquid insecticides. Trenching at this depth allows for adequate penetration of the treatment into the soil, which is essential for preventing termite infestation and ensuring that the chemicals effectively reach the areas where termites may travel or nest.

Trenching helps create a barrier that termites cannot easily cross, and achieving the right depth is crucial for the efficacy of the preventative measures employed. While deeper trenches might seem advantageous, they could lead to excessive soil disturbance and are not always necessary. Conversely, trenches that are too shallow may not allow for effective treatment application, leading to potential weaknesses in the barrier against termites. Thus, a 6 inches deep trench is optimal for providing effective protection against termite intrusion.