AI: 36.8% Permetherin. Astro insecticide gives excellent control of a wide range of insects - from borers, beetles, and leaf hoppers to chinch bugs and cutworms - plus more than 40 other tree and lawn damaging insects. And because it is economical you will be able to use it as your primary low-cost general insecticide. Not only will Astro provide a quick knock-down, its residual control continues long after other insecticides stop working. It has greater staying power for borer and beetle control because it penetrates into bark and will not wash away with rainfall or irrigation.