Vinegar makes a wonderful foot soak. Dilute some vinegar with water and add some essential oils to make a great foot soak. You can also add in bentonite clay and Epsom salts (or a few magnesium flakes) to take it up a notch.  The Epsom salts and magnesium flakes will add magnesium to the water, and your feet will absorb it. Most of us are deficient in magnesium, and this is a great way to increase magnesium levels.