Industrial and many store-bought weed killers contain harmful chemicals. You may not be aware of it, but you have the materials you need to kill the weeds in your garden, in your kitchen right now!
Vinegar has been used to kill weeds for many generations. We recommend that you don’t dilute the vinegar with water and that you apply it directly to the weed at a time when its dry out. For more mature weeds, you can use a vinegar with a higher concentrate of acetic acid, and that should do the trick.
Many people swear by simply pouring boiling water directly onto the weed. This essentially kills the weed by destroying the root.
A commonly used combination eco-friendly weed killer recipe is this: 1 quart white vinegar, 1/4 cup salt, 2 teaspoons liquid dish detergent. Mix those ingredients into a spray bottle and apply directly to the weeds. Be careful to not get too much on any surrounding grass or plants that you don’t want to kill.