Car Cleaning Myth: Diapers, t-shirts and flannel make good cleaning cloths

A smooth surface is exactly what you don't want to see in a cloth, the reason being those fine particulates that you're trying to capture.

While the cloth diaper or t-shirt may be clean, it's actually scratching the surface; a terrycloth premium microfiber towel is what's recommended, the deep pile surface creating a buffer zone that will pick up the bad stuff, not grind it into the paint finish.