What must be done after fumigation to ensure the area is safe?

After fumigation, it is crucial to conduct air monitoring to confirm that fumigants have dissipated before allowing access to the area. This process ensures that the concentration of any remaining fumigants is below the established safety thresholds for humans and the environment. It is essential for protecting the health and safety of individuals who may occupy the space after the fumigation process is complete.

Air monitoring typically involves using specific equipment designed to detect the presence of fumigants, allowing for accurate assessments of air quality. This step is necessary because even after the completion of a fumigation treatment, residues may still be present in the air, and confirming their dissipation ensures that all necessary safety precautions have been met.

The other options would not adequately ensure safety. For instance, leaving the area without further checks could expose individuals to harmful levels of chemicals. Inviting personnel back immediately could result in dangerous exposure if the area isn’t safe. Similarly, applying a secondary treatment without confirming the area is clear could lead to unnecessary chemical exposure or ineffective pest control measures. Thus, conducting air monitoring is a definitive requirement to ensure the safety of the area post-fumigation.