This all-natural method to kill crabgrass is a great option that won't cause lasting soil damage. Simply spray the vinegar (5% acidity or higher) on the weed until it's drenched. Repeat a few times over the course of several days to a couple weeks, or until the crabgrass dies.

Can white vinegar kill crabgrass?

Did you know that a simple solution of regular household vinegar (white or apple cider works best) and dish detergent can be used to kill many weeds, including crabgrass and dandelions? ... The vinegar will then dissolve the waxy coating on the leaves, causing the plant to lose all the water in its tissue and dry out.

What will kill crabgrass but not grass?

Actively growing crabgrass in your lawn calls for selective, post-emergent herbicides, such as Image All-In-One Lawn Weed Killer or Image Herbicide Kills Crabgrass, that kill crabgrass and leave your lawn grass untouched.