Which of the following is NOT a factor in evaluating a pesticide's safety for workers?

When evaluating a pesticide's safety for workers, several factors need to be considered, such as the application method, prevailing weather conditions, and the size of the spray droplets. Each of these elements can significantly influence the exposure risk to workers during and after application.

The application method determines how the pesticide is delivered to the target area, affecting not only the effectiveness but also the potential for drift and exposure to workers. Prevailing weather conditions, such as wind speed and direction, can also have a profound impact on how and where the pesticide applies, increasing or decreasing the risk of worker exposure. Likewise, the size of the spray droplets is critical because finer droplets may drift further away from the target area, affecting nearby workers more than larger droplets.

In contrast, the color of the product label does not play a role in determining the safety of a pesticide for workers. While labels provide important information regarding the product’s use, hazards, and safety precautions, the color itself does not have any influence on the actual toxicity or risk associated with the pesticide. Thus, it is irrelevant in evaluating worker safety in a practical sense.