For effective vector control, what does exclusion typically involve?

Exclusion in vector control refers to methods that prevent pests from entering a space, ensuring that vectors such as rodents or insects cannot gain access to homes, buildings, or other structures. The practice typically involves sealing off potential entry points, which includes addressing cracks and crevices found in walls, doors, windows, and foundations. By doing so, the chances of infestations are significantly reduced, as these pests often find their way indoors through small openings.

This approach is proactive in nature and forms a critical first line of defense in integrated pest management strategies, as it targets the source of the problem by eliminating the pathways through which pests can enter. This differs from other methods, such as using pesticides indoors, laying traps, or fumigating buildings, which occur after pests have already entered and established themselves within a space. Therefore, sealing cracks and crevices is essential for effective long-term vector control, helping to maintain a pest-free environment.