AI: Quinclorac, 2,4-D dimethylamine salt and Dicamba. SmartTrack non-staining red marker shows treated weeds and fades with sunlight. Ideal for spot treatments. Kills both lawn weeds PLUS crabgrass without harming the lawn. Kills over 200 of the most common broadleaf weeds like dandelions and clover. Wont' harm lawns when applied as directed. Rainproof in 1 hour. Not for use on St. Augustine, bahia, carpetgrass, centipedegrass or dichondra.