After spending months researching the ingredients that went into a Finish Powerball tablet, I was not only astounded by the number of toxic chemicals but was fascinated by the chemistry behind it. This is what led me to find my own ingredients and attempt my own version.
One thing I did learn, its a tough job! The science that goes into this tiny tablet is incredible. I must have tried every possible recipe on the internet all with mixed results.
I have since moved house & changed dishwashers only to my disbelief to find my old recipe was not working the same - it was cleaning ok but it was leaving water marks on the glass from the rinse. So, you need to take this into account when making dishwasher tablets or powder. It can sometimes be hit. One thing for sure, having vinegar or a citric acid solution sure does help the process.
So overtime I have come up with a number of dishwasher powder/tablet recipes. This is story behind how those recipes have evolved.