A perimeter barrier treatment involves applications at which locations?

A perimeter barrier treatment is an important pest management strategy aimed at preventing pests from entering structures. The correct focus for this treatment involves several critical locations. The foundation of a building is a primary access point for pests, as many can penetrate through cracks or gaps around walls. Additionally, thresholds (such as doorways and windows) are areas where pests may enter, especially if they are not sealed properly.

Moreover, treating the soil adjacent to the foundation is crucial because many pests, particularly termites and ants, reside in the soil and may try to invade from there. By applying treatments to these three areas—thresholds, the foundation itself, and the adjacent soil—property owners create an effective barrier that significantly reduces the likelihood of pest intrusion.

In contrast, focusing solely on the soil adjacent to the foundation would miss treatment of the entry points where pests typically enter. Similarly, addressing only thresholds and entrances would neglect the foundational vulnerabilities. Treating garden areas alone is insufficient, as it ignores the structural access points that pests exploit. Thus, the combination of treating thresholds, the foundation, and adjacent soil offers a comprehensive barrier approach to pest management.