I have been using a dust cloth but I have been using a clean one to clean mine off. The reason I ask is because right now, my CPU has temperature problems and it idles at about 50-60C and it's not right. I have good case cooling, a Zalman 9700 cooler on my Q6600. I use the ArctiClean 1 and 2 small bottles to remove the old paste then apply new paste. Am I doing it correctly when I put a small line of AS5 going across horizontally (gold triangle bottom left?) I am thinking of re-doing my CPU cooler by taking it off, cleaning it then applying new paste by using the AS5 method.