I take a spray bottle and fill it with 8 fl oz of Dawn Dish soap, and the rest water. I use that mixture to clean my tires. Works better than Simple Green. And I swear that I sometimes have more grip when I clean my tires with the Dawn Soap.

As far as traction Compound goes, it depends on the track I'm at and conditions. But so far I use Trinity Blue Dot, White Sticky Kicks, or SXT 3.0