What is a critical factor in determining the potential harm from a pesticide exposure?

The toxicity of the pesticide is a crucial factor in determining the potential harm from pesticide exposure because toxicity directly relates to how harmful a substance can be to humans, animals, or the environment. Toxicity is measured through various endpoints, such as acute toxicity (the immediate effects following exposure) and chronic toxicity (long-term effects resulting from exposure over time). Understanding the toxicity helps applicators assess the risks associated with using a particular pesticide, enabling them to take necessary precautions and implement safety measures to minimize exposure.

Other factors, such as the color, cost, or brand of the pesticide, do not provide meaningful insight into the health risks or environmental impact associated with its use. While they may influence choices about purchasing or using a pesticide, they are not critical to understanding the inherent danger posed by the pesticide itself when exposure occurs.