If your feet are swollen I would rather not use baking soda in the foot bath. I would consider foot bath #3 because baking soda may aggravate the swelling. http://curezone.com/forums/fm.asp?i=1028933#i
FOOT BATH 3 with Apple Cider Vinegar
* 4 Tablespoons of Magnesium sulphate (Epsom Salts)
* 1 cup of Apple Cider Vinegar
Hydrogen Peroxide (H2O2) - half to 1 pint of 3% solution OR
0.75 - 1.5 ounces of 35% solution