What happens to aerosol droplets from thermal foggers in poorly ventilated areas?

In poorly ventilated areas, aerosol droplets from thermal foggers tend to settle and accumulate on surfaces. This occurs because the lack of air movement prevents effective dispersion of the droplets; instead, gravity acts on them, causing them to drift down and land on various surfaces. This accumulation can lead to higher concentrations of the pesticide residue in localized areas, which can be a concern for both efficacy and safety, as it may increase the risk of human exposure or impact non-target organisms in those spaces.

The characteristics of thermal fogging, which generates small droplets that can remain suspended in the air for some time and then settle, play a significant role in this process. In environments with limited airflow and ventilation, the chances of these droplets settling on surfaces increase, leading to potential buildup and the need for careful consideration when applying pesticides in such conditions.