Onslaught® Microencapsulated Insecticide utilizes controlled-release technology to deliver long-lasting residual control of a wide range of pests, including bed bugs, cockroaches, biting flies, fleas, mosquitoes, spiders, and scorpions. The microencapsulation allows for a controlled release of the active ingredient, esfenvalerate, providing residual control while minimizing odor and staining. Onslaught® is labeled for use in and around homes, food and non-food areas, and other structures.