I really didn't know what was in it, so I researched it, and it looks like its: baking soda, salt, carbon dioxide, hydrogen peroxide, and potassium hydroxide (lye). The only scary one is the lye.
So, how bad do you think that is? And is there a good alternative? We personally don't use any stain removers or whitening agents other than some baking soda in the white wash. Somehow, our clothes look fine. But I know many other families have loads of messy stains that they need help with. What can I suggest to her?