Pour 400ml of horticultural vinegar into a large spray bottle.
Vinegar is full of acetic acid, which will kill small, young weeds with a few leaves.
Before using vinegar on weeds check the pH of your soil because vinegar will raise the acidity of your soil.
Different plants thrive in different soils, so this may cause the plants in this area to perish.
Avoid using vinegar near your lawn or near plants, because vinegar will kill any plant it comes into contact with.