I love using Baking Soda in the laundry, approx. one cup per load. You can add it to colors, brights, and whites. It doesn't fade colors, it simply takes out stains....and let me tell you my 4 year old is a genuis at staining everything
If you need a little bit more powerful, simply add the baking soda and bleach.....wow are those whites bright
And, best of all it's super cheap! A 5lb. box costs like $3 and you can find it in the baking isle in the grocery store. HTH