Using 1 cup Vinegar in a stock pot filled with water just enough to cover item you want to whiten. bring to boil add sox remove from burner and allow to sit 24 hrs. then wash a normal then hang out on line in the sun to further the whiting process.
To make your own, you just need water, washing soda (note that you can also use baking soda) and hydrogen peroxide. Just mix equal parts of peroxide and washing soda with a double part of water. For instance, mix 1 cup of water with ½ cups each of washing soda and peroxide.
How to freshen your towels and get rid of that mildew stink
Mom's Homemade Super Laundry Sauce One Single tablespoon does a whole load of wash! $1.76 for 128 loads of laundry? Safe for HE machines. ~ This makes 1/2 Gallon of concentrate ~ 1 bar Fels Naptha (Yes, the ENTIRE Bar!) 1 cup 20 Mule Team Borax 1 cup Arm Hammer Washing Soda (NOT BAKING SODA!!) 4 cups of hot water