Joey I also usually use STPP. What I hate is that there's no cloranated detergents except gels on the shelves anymore. Old machines with their shorter wash times benefit from chlorine. I have been adding my own Chlorine Bleach with Cascade pods, I know it kills the enzymes but the surfactants still work lol. Actually what I've found works great for me with just a 15 minute wash cycle is to just turn the dial back around for another 15 minutes of wash time giving enzymes time to work....but ya check out the Dropps they are wonderful and I'm very grateful to Mich for finding them. Cheryl