This homemade weed killer has worked good for me. It is the organic formula from Howard Garret. It is best to use a very clean soap I normally use something like Dr. Bonner's. The hardest part is finding 10% vinegar look for pickeling vinegar or try an organic garden center or feed store in your area. Also, do not spray at the hottest time of the day the top of the plants will burn fast and it will not kill the root.
Vinegar Herbicide Formula:
1 gallon of 10% vinegar
Add 1 ounce orange oil or d-limonene
1 teaspoon liquid soap or other surfactant (Bio Wash)
Add molasses at 1 tablespoon per gallon to the vinegar formula
Do not add water
The other option is replace the salt in your formula with an ounce or two of orange oil and see what happens.
