What role do active ingredients play in pesticides?

Active ingredients in pesticides are the specific substances that have a direct effect on the target pest, meaning they are the chemicals responsible for the pesticide's effectiveness against pests. These active ingredients are formulated to disrupt the biological processes of the pests, ultimately leading to their control or elimination. This role is crucial because the effectiveness of a pesticide depends significantly on the properties and actions of its active ingredients.

In contrast, other options refer to different aspects that do not accurately represent the primary function of active ingredients. While diluents and other components may be involved in the formulation to assist in application, it is the active ingredients that are the key players in pest management. Understanding the specific function of active ingredients highlights their importance in developing effective pest control strategies.