My town has only two paved roads, everything else is gravel - so, needless to say, my wash routine is very lazy, haha. I pretty much just rinse off the dust about 6-8 times a year (usually no soap, even, except maybe 3-4 times a year), not counting any rain that might happen to occasionally rinse the van a bit. I could (and have) fully clean it in my yard, go back out an hour later and it's dusty again just because somebody drove by. Talk about just spinning your wheels, going nowhere fast! lol. But, I wouldn't trade a minute of the country to be back in the stupid big city.