Texas Pesticide Applicator Practice Exam

What element on a pesticide label serves as a warning for its level of toxicity?

1. Ingredients list

2. Signal word

3. Brand name

4. Expiration date

The correct answer is: Signal word

The signal word on a pesticide label is a key element that indicates the level of toxicity of the product. Signal words are standardized terms that provide immediate information to the user about the potential hazards associated with the pesticide. These words typically fall into categories such as "Caution," "Warning," and "Danger," each reflecting increasing levels of toxicity. For instance, "Caution" signifies lower toxicity, "Warning" indicates moderate toxicity, and "Danger" suggests the highest level of toxicity, often corresponding with more severe risks if proper precautions are not observed. This clear labeling helps users quickly assess the level of care needed when handling the pesticide, ensuring they are aware of potential health risks and can take appropriate safety measures. The ingredients list provides information about what is in the pesticide, while the brand name identifies the product. The expiration date indicates how long the pesticide remains effective but does not indicate its toxicity level. Thus, the signal word is specifically designed to communicate toxicity risks directly, making it the correct answer to the question regarding warning levels on pesticide labels.