So I have been trying to perfect my washing with ONR, GDM. I've been buying my distilled water which at 88 cents a gallon is not going to kill me. A random thought came to me today as I was emptying my dehumidifier for about the 10th time in 3 days. Anyone know why I can't be using that to wash my vehicles? If I make sure I clean the tank well, it should be good to go. Anyone do this?