Texas FFA Nursery Landscape Practice Exam

Which signal word on pesticide labels indicates the lowest level of toxicity?

1. Warning

2. Danger

3. Caution

4. Careful

The correct answer is: Caution

The signal word "Caution" on pesticide labels indicates the lowest level of toxicity, serving as a crucial guide for safety when handling and applying these chemicals. In terms of regulatory standards, signal words are categorized based on the potential harm a product can cause, with "Caution" reserved for those substances that pose a lower risk. This classification means that products labeled with "Caution" are generally less toxic than those labeled with "Warning" or "Danger," making it essential for users to assess risk when selecting and using pesticides. Understanding these signal words helps ensure proper safety measures are followed, especially in environments such as nurseries and landscapes, where sensitive plants and human health can be at stake. The other terms, such as "Danger" and "Warning," indicate higher levels of toxicity and signal that the product should be handled with more care and precaution. "Careful" is not a standardized signal word on pesticide labels and does not provide a level of toxicity evaluation in the same manner as the others. Thus, recognizing "Caution" as the signal word for lower toxicity is important for safe pesticide use.