As my name implies (antique) I may know of an old fashioned way that I use when I paint to keep the dust away. I use hair spray on the walls and the floor before I paint. I spray the hairspray and leave it alone for about 20 min. before painting. The hairspray is possitively charged and the dust is negatively charged, it pulls the dust to it like a magnet. I almost never have to wetsand a car while using this method.