Does anyone use something like a california car duster on thier cars?

I live in the desert, ergo TONS of dust, but the car itself is clean and doesn't really need washed...
Is it safe for the finish to use a duster that is soft/nonabrasive without pressure, or should the car be washed every time it gets significantly dusty?

Tell me what you all do...

JJ

 

If it's SIGNIFICANTLY dusty, you need to wash. If it's very light, the cali duster is ok as long as you don't use pressure. Some guys think it's a no water car wash, I swear!!