Here is a quote from the website:
Q: Do mix-at-home cleaners contain chemicals?
A: All cleaners, whether commercially formulated products or mix-at-home recipes, are composed of chemicals - whether they contain food ingredients extracted directly from a plant or chemicals synthesized in a laboratory.
So basically.... chemicals are in most every product you can use to make your own cleaners and they are not healthy for us. Plus they cost $$. Plus they take more time to clean with. Plus they leave residues that you come in contact with every day. End of story. I love my Norwex silver-embedded microfiber cloths +water cleaning!