How many toxicity categories are used on pesticide labeling?

The correct answer is that pesticide labeling utilizes three toxicity categories. These categories are designed to inform users about the potential hazards associated with pesticide products. The first category includes highly toxic pesticides that can cause severe injury or death even with minimal exposure. The second category covers moderately toxic substances that can cause illness or harm but are less likely to be fatal than those in the first category. The third category encompasses relatively low toxicity pesticides that pose minimal risk when used according to label directions.

Understanding these categories is crucial for applicators to evaluate the risk associated with different pesticides in relation to their work environment and to take appropriate safety precautions. Labels play an essential role in communicating the necessary safety measures, protective equipment, and first aid instructions, which ultimately aids in reducing the risk of harm to humans and the environment.