What indicates a higher level of toxicity for a pesticide product?

The signal word on the label is a critical component that communicates the level of toxicity of a pesticide product to the user. Signal words such as "Danger," "Warning," and "Caution" are standardized terms used to indicate the relative toxicity of the product. "Danger" signifies a highly toxic substance, while "Caution" indicates a lower level of toxicity. Thus, the presence and type of signal word effectively inform users about the potential hazards associated with the product, making it a key factor in assessing toxicity levels.

In contrast, while the product's chemical composition can influence its toxicity, it is not always directly communicated to the consumer in a way that is easily understood. Similarly, the color of the label may vary without corresponding to toxicity levels and is largely aesthetic. Lastly, the price of a pesticide product does not correlate with its toxicity; it may reflect factors such as brand reputation, formulation, or market demand rather than safety and toxicity levels. Therefore, the signal word effectively provides an immediate understanding of the health risks associated with the pesticide, making it the most direct indicator of toxicity among the choices.