Sodium Tripolyphosphate STPP (5 lb) Eco-Friendly Packaging, Powerful Cleaning Agent, Water Softener, Laundry Additive

I don’t know how to explain this product any other way but to say that this allows the laundry and dishwasher detergents to do the jobs that they were designed to do (CLEAN). I wasn’t sure this would get me the results that I was looking for, but through my research, I was assured this was the missing link that I needed to resolve my decade long nightmare. And as promised… I took a blind leap of faith, tossed a scoop in the machine, and waited. The results… the heavens open up and the angels sang a glorious “your stuff is clean again” melody. I was shocked, ecstatic, and dancing for joy. No need to buying more products to pre-treat, soak, de-stain, or de-anything. Just let the detergent do all of of the work that is was designed to do. All I can say is hallelujah! I am one very, very happy lady again!

Adding a tsp to dishwasher as Cascade fryer boilout no longer seems to be available.

If you use commercial detergent this probably is great. I make my own laundry soap using real soap and our water is not very hard but it takes a lot of this to soften the water. I’d be better off getting a water softener.

I've previously been adding TSP to my dishwasher along with a standard liquid dishwasher detergent. That was working pretty well. But I thought I'd give STPP a try. And it works gangbusters. Much higher rate of sparkling glassware. It even improves water spots. Use a teaspoon or tablespoon or whatever seems to work along with your regular detergent.There are food uses for STPP also, but they are probably too technical for a home kitchen. If you're geeky though....

Good for you