First post here after hours of reading. First let me say thanks to all who contribute so people like me who are new to detailing can learn the right way. I have an issue with contamination on newly waxed/treated cars. Four weeks ago I put Duragloss Enviroshield on our new car (<2000 miles) and two weeks ago I put one of layer of each Auto Finesse Desire/Illusion on our older car. I clayed both and also polished the older one and both were smooth to the touch using the baggie test before application. I washed them today and both felt OK to the bare touch but the baggies test revealed both have contamination again. We live in the country just outside Louisville with a gravel driveway, both are DD about 30 miles a day, garage at night and the average commercial parking lot during the day. I've been trying different waxes and sealants to see what I prefer, but at this rate why do I care how long anything lasts if I have to clay every month or so and reapply? Am I being too OCD and worrying about the results of the baggie test? Both bead as expected and look good. I enjoy working on the cars but both are SUVs and take a fair amount of time to detail the right way. My main goal is to keep the new Mercedes as nice as long as possible and thinking ahead to the winter, plus I just like driving cars that look as good as possible. Thanks in advance for any advice.