You could make a small fortune selling "illegal" dishwasher detergent with phosphates in it.
As someone who knows his soap history, I can say this is very true!
Phosphate-based soaps were banned for causing algae blooms (and other environmental problems) and nothing since has worked as well.
Thinking about it, perhaps using old washing-machine water (with phosphates) in a greywater system, would make excellent water for plants!

(real) lye soap
sodium-chloride
sodium-carbonate (fixed)
sodium-tetraborate
sodium-triphosphate.
All four sodiums are white powders, while the soap looks like shredded American cheese.
I am aware of the value of phosphates. The real question is the bitcoin community aware of the value of phosphates, because they aren't cheap and they aren't in
any residential/retail cleaning products (in any significant concentration) anymore. That is what I'm competing with, BTW. If the bitcoin community wants phosphates in their clothes detergent, I have that; and if the bitcoin community wants phosphates in their dishwashing detergent, I can do that too. As I said before, my detergent has five ingredients, all of which serve a particular purpose and only one of which is
actual soap.