Which of the following is true about Category 4 chemicals?

Category 4 chemicals are indeed classified as having the lowest toxicity level among the various toxicity categories used for pesticides. This categorization is defined by organizations such as the Environmental Protection Agency (EPA), which uses a tiered system to indicate the level of risk associated with chemical products.

In the toxicity classification system, chemicals are ranked from Category 1, which represents highly toxic substances, to Category 4, which indicates a much lower risk to human health and the environment. This means that products in Category 4 typically pose minimal risk if used according to the label instructions, making them more user-friendly for those applying them, such as pest control technicians.

Understanding the toxicity levels is crucial for ensuring safe handling practices and appropriate use in various pest control scenarios. When working with lower toxicity chemicals, handlers generally do not require as stringent safety measures compared to those dealing with higher toxicity levels, reflecting the practical implications of this classification.