When treating for subterranean termite infestations in a structure, voids in multiple masonry foundations must be drilled and treated at a minimum distance of how many feet?

The correct answer is grounded in standard practices for effectively managing subterranean termite infestations. When treating for termites in structures, particularly those with masonry foundations, it is essential to drill and treat voids at a minimum distance of 4 feet apart. This distance ensures that the chemical treatment can effectively reach and create a protective barrier against termites that may traverse or establish colonies within the structural components.

The 4-foot minimum allows for adequate distribution of the termiticides being applied, ensuring that any potential pathways or entry points for termites are properly addressed. Proper spacing also accounts for the dynamic nature of termite movement, which can vary based on environmental conditions and the structure's design.

In broader pest management practices, ensuring appropriate distances between treatment points helps in maintaining effectiveness while minimizing waste of the termiticides used. Keeping treatments within this distance helps ensure coverage and makes it less likely for termites to bypass the treated areas, reinforcing the protective measures taken against infestations.