Stop tugging, pulling, and digging dandelion, white clover, and other lawn weeds Instead, use Scotts Weed B Gon MAX Ready-to-Use Weed Control. It’s formulated with chelated iron so it KILLS WEEDS, NOT LAWNS for easy and effective spot treatment. Just follow label directions and spray. You’ll start seeing it work within several hours of application with susceptible weeds turning brown or black. For best results, spray unwanted weeds until thoroughly wetted.