the difference in dust is about 90% less so even if you like to rinse it instead of wiping or just dusting once a week go for it,but remember all that brake dust on the side of your car isn't there either!but if you're more interested in the towels use a hose,I don't like all the water coming out later thru the cap.and some water spots are harder than others.But I never use a hose on my car.