I usually just hit the undercarriage and engine with high pressure and do a quick run around the Jeep- costs me about $2.00. Once I get home is where the time consuming cleaning takes place. I use Purple Power to get rid of the stains, a scrub brush to loosen the other stuff, and then spray the whole thing down again. Can't wait to replace my fenders, side steps and rear bumper...it's so much easier to clean my front bumper now that it isn't plastic anymore...that's the most irritating part.