Crabgrass Plus Crabgrass & Lawn Weed Killer, 5,000-Sq. Ft. Coverage5,000 sqft coverage, crabgrass plus post emergent crabgrass & lawn weed killer, combines quinclorc, dithiopyr, dicamba, & 2. 4 d to kill many kinds of lawn weeds including hard to control mature crabgrass without harming lawn grasses, for home lawn use, eliminates early season timing challenges to produce a weed free lawn, lightweight carrier for better leaf adhesion & effectiveness, treats northern & southern lawn grasses except centipede & st.