Pin Dee 3.3 T&O Herbicide Drexel Chemical Co. Pre Emergent Herbicides Pendimethalin- 37.4% Pin Dee 3.3 EC Herbicide will not work on existing weeds. Pull out existing weeds if there are any For use in Commercial and Residential Turfgrass, Fields, liner and container Nurseries, and Non-Bearing Fruit Trees * See label for complete list Barnyardgrass, Crabgrass, Foxtail, Hop Clover, Knotweed, Prostrate spurge, Goosegrass and others