What is the purpose of applying IGRs to breeding sources?

The purpose of applying Insect Growth Regulators (IGRs) to breeding sources is to stop or inhibit larval growth. IGRs are specifically designed to interfere with the growth and development of juvenile insects, preventing them from reaching maturity and reproducing. By targeting the larval stage, IGRs disrupt normal development processes, which ultimately reduces the population of adult mosquitoes over time. This method serves as an effective component in integrated pest management, as it helps control mosquito populations without the immediate lethal effects associated with traditional insecticides, allowing for a more sustainable approach to pest management.