MDARD Michigan Core Pesticide Applicator Practice Exam

What does the signal word on a pesticide label indicate?

1. Effectiveness

2. Relative toxicity

3. Compatibility

4. Formulation

The correct answer is: Relative toxicity

The signal word on a pesticide label provides critical information regarding the relative toxicity of the product. It is part of the labeling requirements intended to ensure safe handling and application of the pesticide. Signal words such as "Caution," "Warning," and "Danger" reflect the potential hazard associated with exposure to the pesticide. For instance, "Caution" typically indicates that the product is slightly toxic, while "Danger," often accompanied by a skull and crossbones symbol, signals that the product is highly toxic and poses a greater risk to human health and safety. This classification helps applicators, handlers, and consumers understand the level of risk involved in using the product and take appropriate safety precautions. The other choices refer to different aspects of pesticides; effectiveness relates to how well the product performs its intended function, compatibility involves how the pesticide interacts with other products or substances, and formulation refers to the chemical composition and physical form of the pesticide. None of these directly communicate information about toxicity, which is why the signal word is an essential part of pesticide labeling.