What is true about the active ingredient in pesticides?

The active ingredient in pesticides plays a critical role as it directly influences the effectiveness of the product in controlling the target pests. This ingredient is the component responsible for the intended action, whether it be killing, repelling, or otherwise managing pests. When evaluating the efficacy of a pesticide, understanding the concentration and potency of the active ingredient is crucial; higher efficacy generally correlates with a more effective active ingredient.

While there may be considerations regarding safety and cost, these factors do not influence what the active ingredient's primary function is—to control pests. Other ingredients in the pesticide formula, such as inert substances, may determine overall product safety, formulation stability, and cost, but they do not dictate the active ingredient's role in an effective pest management strategy.