I use the 12 bucket method. I have to rinse each bucket with a bucket of cleaner water, so that each grit guard is cleaner than the previous one.
I only ever wash my microfibre wash mits under a running warm tap using a new sheepskin mit, and clean latex gloves.
Once I have done that. I use distilled water to rinse out my snow foam lance and descale the gauge element.
I then put a 1:50 snow foam mix in the lance, and fill with hot water.
Then I pack it all away because it has gone dark and go to the Polish car washers instead....