Which action is not recommended in the event of a fire involving pesticides?

Using water jets to extinguish a fire involving pesticides is not recommended because many pesticides are organic compounds that can be rendered ineffective or even more hazardous when mixed with water. Additionally, water can spread the fire or increase the risk, especially if the pesticide contains flammable materials. Furthermore, the use of water may create hazardous runoff that can contaminate surrounding environments, especially if the pesticides are in a liquid form or are water-soluble.

In contrast, evacuating the area immediately is essential for safety, allowing people to distance themselves from potential exposure to harmful fumes or accidental contact with the fire or burning chemicals. Notifying emergency services ensures that trained professionals can address the situation appropriately and safely. Using foam extinguishers is often a suitable approach for flammable liquids since foam can smother the flames and prevent oxygen from fueling the fire without causing additional reactions.