How far apart should drilled holes be when treating concrete block foundation voids?

When treating concrete block foundation voids, it is essential to ensure that the drilled holes are spaced appropriately to effectively deliver the treatment material throughout the voids. A spacing of 12 inches between the holes is deemed optimal because it allows for adequate coverage and penetration of the treatment, ensuring that any wood-destroying pests residing within the block voids are effectively reached.

This spacing helps to create a sufficient distribution radius for the liquid treatment, which can spread through the voids and provide better control against infestations. Placing the holes too far apart might result in insufficient coverage, leaving some areas untreated, while placing them too close together could be inefficient and unnecessary, leading to waste of product and potential over-saturation of specific areas.

Thus, the correct spacing of 12 inches facilitates a balance between effective application and efficient use of treatment, maximizing the effectiveness of pest control efforts in concrete block foundations.