The acetic acid in the vinegar acts as a desiccant ... 2,4-D amine. Additionally, you can make a homemade weed killer with salt, white vinegar, and dish soap in a gallon of water to eliminate the weed ...
I grew up eating all sorts of homemade pickles ... Be sure that pickling vinegar has an acidity of 5% acetic acid. The percentage is on the label. If you want to try your hand at pickling ...