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

Using water jets to extinguish a pesticide fire is not recommended due to the potential for chemical reactions. Many pesticides are formulated with components that can become hazardous when mixed with water, leading to the creation of toxic fumes or hazardous runoff. Additionally, water can spread the fire or the burning pesticides, making the situation worse.

In contrast, using fog, foam, or dry powder to contain small fires is a safer approach, as these methods typically suppress flames without the risk of spreading hazardous materials. Constructing dikes to contain contaminated runoff water is also a critical action to prevent environmental contamination during a fire. Lastly, notifying the fire department and providing them with details about the pesticides involved ensures that firefighters are adequately prepared to handle the specific hazards they may face, enhancing safety for both first responders and the surrounding community.