Chlorbenzuron is primarily used as an insect growth regulator in agricultural pest control. It interferes with chitin synthesis in insects, preventing proper development of the exoskeleton during molting, which leads to death of the pest. It is effective against a range of insect pests, particularly lepidopteran larvae such as codling moths, leafrollers, and fruit borers. Commonly applied in orchards, vineyards, and vegetable crops, chlorbenzuron provides control with minimal impact on beneficial insects and the environment when used as directed. Its residual activity allows for longer protection periods, reducing the need for frequent reapplication.