/johnny
I looked into that but the TSP in my hardware store states: Contains no phosphates on the label.
If you go to GFS, Dierks or other restaurant/institution supply store, the Inst. Calgon has phosphates. As far as the dishwasher itself, check Canada or see if you can find a low end commercial version.
be careful TSP can etch glass. I’ve found that you need less than a tsp. along with Cascade for heavy duty work. Finish from Sam’s works well.
Bingo! I use it in the clothes washer. It can be found in the paint department, used for preping siding. TSP “holds” minerals, food, whatever in solution. TSP is the magic that makes cleaning happen. It is an effective de greaser as well.
TSP will eat up your washer seals and your plates.