Which of the following describes an Insect Growth Regulator (IGR)?

An Insect Growth Regulator (IGR) is a pesticide that mimics insect hormones. This class of chemicals is designed to disrupt the normal growth and development processes of insects, particularly targeting their life cycle stages such as molting, metamorphosis, or reproduction. By interfering with these hormonal processes, IGRs can prevent insects from reaching maturity, thereby reducing their populations over time.

This mechanism of action is distinct from other types of pesticides, which may kill insects upon contact or through ingestion. IGRs do not necessarily kill insects immediately; instead, they act over a longer period to prevent development and reproduction, making them valuable for integrated pest management programs.