DIY wash the car ourselvesThe microfiber thread will stick to the plastidipped area. So basically tell them not use cloth on that spot and just blow dry it.
I am using microfiber mitt to wash the dipped surface. But instead of wiping, I tap and brush lightly on the dirty area then spray with water. Works every time and the dip doesn't come off. To dry the water, same thing, use MF and tap instead of wipe.