Insect Growth Regulators (IGRs) are chemicals that disrupt the normal development of insects. They work by mimicking hormones that control growth and maturation, preventing insects from reaching adulthood or reproducing. IGRs are often used in pest control to manage populations of harmful insects without affecting beneficial species. These substances are particularly effective against pests like cockroaches, mosquitoes, and flies. Unlike traditional insecticides, IGRs target the life cycle of insects, making them a safer option for the environment and non-target organisms. They can be applied in various forms, including sprays and granules, to control infestations effectively.