What are substances such as surfactants and adjuvants classified as?

Substances like surfactants and adjuvants are classified as non-pesticides because they do not have a direct pesticidal action on pests. Instead, they serve as auxiliary agents that enhance the effectiveness of pesticides. Surfactants help to improve the spread and adhesion of the pesticide on the surface of the target, while adjuvants can modify the physical properties of the pesticide formulation or the way it interacts with the target environment. This classification is important as it distinguishes these substances from active ingredients, which are the components responsible for the pesticidal effects, and from pesticides in general, which are chemical substances intended for preventing, destroying, or controlling pests. Understanding this distinction is crucial for proper pesticide application and regulatory compliance.