I've been using the Griots Clay bar and I know Andrew isn't a big fan of it and that's cool, but I have had nothing but praise for it. Yes you've gotta wear gloves, but think of it like this, its picking up those embedded contaminents though. I too detail cars on the side and I buy in bulk, so any QD can be used as lubricant with the clay bar. Just my .02 cents worth and BTW, Clay Magic worked well for me when I tried it too.