What is the term for a pre-construction soil application of termiticide under a concrete slab?

The term for a pre-construction soil application of termiticide under a concrete slab is "horizontal barrier." This applies to the practice of creating a protective layer in the soil that prevents termites from entering the structure through the ground. By applying termiticide horizontally under the concrete slab, it allows for thorough and effective treatment, creating a zone of protection in the soil that deters termite activity.

A horizontal barrier specifically refers to the treatment being applied in a flat manner across the foundation area, unlike vertical barriers, which are designed to protect structures against termites coming from the sides or upwards into the building. The effective application of a chemical barrier ensures that there is no access for termites, reinforcing the integrity of the structure against infestations.