Perimeter applications are used to create a barrier around which areas?

• A. Inside rooms only
• B. Exterior barrier including house, foundation, soil, and nearby plant material
• C. Only along fences
• D. Only in water bodies

Answer: (B)

Perimeter applications are designed to form an exterior protective barrier around a structure to keep pests from entering. This means treating the outside of the house and around the foundation, including the surrounding soil and nearby plant material, to create a treated zone that pests must pass through before reaching living spaces. The idea is to intercept mosquitoes, ticks, or other pests where they attempt to move from the yard into the home, rather than focusing on interior rooms, fences, or any water body. By establishing a treated strip around the exterior and adjacent vegetation, you reduce the likelihood of pests crossing into the structure.