Largo belongs to the spinosyn class of insect management tools which is naturalists in origin . Largo Contains Spinetoram 11.7% SC as an active ingredient. Largo is Derived from the fermentation of saccharoplyspora spinosa ( a common soil bacterium) and is then chemically modified. Largo provides broad-spectrum insect control (Thrips & Lepidopteran insects) with excellent residual activity on a variety of crop.