AI: 24.0% dithiopyr. Dimension specialty herbicide provides pre-emergence and early post-emergence control of crabgrass, and season-long control of crabgrass, goosegrass, foxtail, spurge and Poa annua. With multiple formulations, including the water-based Dimension 2EW, Dimension can be used over the top of field- and container-grown nursery and landscape ornamentals, and in established lawns, golf course fairways, roughs and tee boxes, and commercial sod farms.