Ortho 1-Gal Ready-to-Use Weed B Gon Max Plus Crabgrass Control for $5.00 within-store pickup at Home Depot only.  Here is a screenshot for reference. It kills dandelion, crabgrass and broadleaf weeds down to the root without harming the grass and includes a built-in trigger sprayer for easy application.  Most places have it for about $13.