What term describes a component of a pesticide product that has pesticide activity?

The term "active ingredient" refers to a component of a pesticide product that is responsible for its pesticidal activity. It is the substance that targets and affects the pest, which is the primary reason for the product’s use. In pesticide formulations, the active ingredient is what makes the pesticide effective against the organisms it is designed to control, such as insects, weeds, or diseases.

The significance of identifying the active ingredient is crucial for understanding the efficacy and safety of a pesticide product. It also helps users to follow the label instructions for application rates, timing, and safety precautions. The active ingredient is usually present in smaller quantities, as its potency is specifically formulated for effectiveness.

In contrast, inert ingredients are substances included in the formulation to aid in product application, enhance stability, or improve efficacy, but they do not contribute to the pesticide activity. Pesticide carriers and formulation agents are specific types of inert ingredients that facilitate the delivery of the active ingredient but do not themselves possess any pesticidal properties.