What can indicate a pesticide can cause both acute and chronic toxic effects?

The signal word on a pesticide label is an important indicator of its potential toxicity. Signal words are standardized terms that provide immediate information about the level of toxicity the pesticide presents to humans and the environment. These words typically include "Caution," "Warning," and "Danger," which communicate the severity of the pesticide's acute toxic effects.

Moreover, understanding the signal word is essential because it often correlates with chronic toxic effects as well. A pesticide labeled with a higher toxicity signal word is likely to indicate that there may be both immediate harmful effects (acute) and long-term health risks (chronic) associated with exposure. Thus, when evaluating a pesticide for safe handling and application, the signal word serves as a crucial reference point for gauging both types of toxic effects.

Other factors such as packaging color, physical appearance, and costs do not provide standardized or reliable information regarding the acute and chronic toxicity of the pesticide. The signal word is the most direct and informative indicator for assessing risks associated with pesticide use.