Which of the following is NOT a common component used with pesticides to create a usable form?

Insect growth regulators are not common components used to create a usable form of pesticides; rather, they serve a specific function within pest management. These regulators are specialized compounds that affect the growth and development of insects, interrupting their life cycles to manage populations. They do not modify the physical or chemical properties of the pesticide formulation itself for application, which is the primary role of diluents, wetting agents, and solvents.

Diluents are used to reduce the concentration of active ingredients in a pesticide to enhance safety and efficacy in applications. Wetting agents facilitate the spreading and sticking of pesticides on surfaces, improving coverage and absorption, while solvents help dissolve or disperse active ingredients, making them easier to apply. Each of these components plays a crucial role in ensuring that the pesticide can be effectively utilized in controlling pests, whereas insect growth regulators focus strictly on altering insect behavior and development rather than altering the usability of the pesticide formulation.