I use the water and soap mix just don't add too much soap no more than a half ounce because it seems like there is so much lubricity that you can't tell that the claybar is picking up dirt in some areas. Then you have to go over it again. I like
PB's Super Slick and Suds along the line of 1/4 ounce since it is so concentrated. Steve gave me this idea when I ran out of S&W. Great alternative to a QD.