Which statement best describes the role of barriers in pest management?

• A. Barriers help prevent pests from entering an area
• B. Barriers kill pests on contact
• C. Barriers attract pests to treated areas
• D. Barriers are ineffective against most pests

Answer: (A)

Barriers act as a frontline defense by blocking pests from entering or reaching a protected area. They create physical obstacles at entry points so pests can’t get inside or access critical spaces. Think of screens on windows and vents, door sweeps and weatherstripping that seal gaps, caulking around cracks, and mesh coverings over vents or crawl spaces. When these barriers are installed and kept in good repair, they reduce the number of pests that can gain access, lowering the risk of infestation without relying on pesticides.

This approach isn’t about killing pests on contact, and it isn’t about attracting pests. It works best as part of an overall IPM plan that also includes sanitation, monitoring, and targeted treatments if needed.