Designed for turfgrass applications, non-crop, and IVM (Industrial Vegetation Management) applications, this product contains three active ingredients. 1. 2,4-D is an auxin-type herbicide which is a class of plant growth regulators. It is absorbed through the leaves and is translocated to the growing points of the plant, causing weed stems curl and twist, leaf cupping and withering, and eventual plant death. 2. MCPP-p (mecoprop-p) is an auxin-type herbicide, which is a class of plant growth regulators. It is absorbed through the leaves and is translocated to the growing points of the plant, causing weed stems curl and twist, leaf cupping and withering, and eventual plant death. 3. Dicamba is absorbed through the leaves and roots and has multiples modes of actions for hard-to-kill broadleaf weeds. Combining these herbicides provides a very wide spectrum of weed control for susceptible weeds. Trimec(R) 992 Broadleaf Herbicide controls weeds by affecting multiple sites within the broadleaf weeds. The symptoms of susceptible broadleaf weeds include leaf and stem curl or twisting, and weed yellowing. These combined herbicides provide limited residual activity.