Why is it essential to identify ventilation points during fumigation?

Identifying ventilation points during fumigation is vital primarily because it ensures proper sealing and helps avoid the escape of fumigant during the treatment. Fumigants are highly toxic and must be contained within the treated structure to effectively eliminate pests. Proper sealing of the structure around identified ventilation points allows the fumigant to disperse evenly and maintain the necessary concentration for the required exposure time. If ventilation points are not properly managed, there is a risk of fumigants leaking out, reducing efficacy and posing health hazards to individuals outside the treated area.

While monitoring temperature, preventing pest reinfestation, and facilitating entry and exit are relevant considerations in the fumigation process, they do not primarily relate to the immediate concern of containing the fumigant within the treatment area. The primary focus is ensuring that the fumigant stays within the defined space to achieve successful pest control.