Once I bought a new FL washer and learned about different detergents on this forum, I stopped using CS. I used CS in our old TL washer for quite a few years and it does nothing for stains. I used the CS all-purpose cleaner as a stain pre-treat for the first couple years, as well as Shout. Some stains just don't want to come out, because CS has no enzymes in it. Grease/oil/fat based stains came out with some Dawn liquid dish detergent rubbed in and let set for several minutes, as a pre-treatment. I still have to do it in my FL washer with enzyme-based detergents. I use the regular Dawn, nothing jazzed up. Some stains required Citra-Solv, and others required a soak in Oxy-Clean.