What kind of pesticide is typically used to control pests by interrupting their reproductive processes?

The correct answer is indeed a type of pesticide known as an Insect Growth Regulator (IGR). These substances are specifically designed to disrupt the normal development and reproductive processes of insects. Rather than killing pests outright, IGRs work by interfering with the production of hormones necessary for growth and maturation. This disruption can prevent insects from reaching reproductive maturity, reducing their ability to reproduce and thereby controlling pest populations over time.

Fungicides, on the other hand, are targeted at fungi and are used to manage fungal diseases, while herbicides are employed to control unwanted plants or weeds. Repellents are used to deter pests from approaching or feeding, but they do not impact the reproductive processes of insects. Understanding the roles and mechanisms of different types of pesticides is crucial in pest management as it helps in selecting the appropriate chemical for specific pest control needs.