White vinegar can be used alone, or you can add additional ingredients to the vinegar to make an even stronger solution. [substeps] Avoid using vinegar on or near your lawn, since it will kill the grass.
[header] How to make weed killer [title] Start with 2 c (400 ml) of white distilled vinegar. [step] Vinegar contains acetic acid, which effectively kills weeds. Keep in mind that vinegar is non-selective and will kill any living plant it touches, not just weeds.