I lived in Augusta, Georgia for 3 years. I dont know if you watched the Masters last week, but the pollen was a record high. You used to see it like a swarm of green locusts moving through the air....then it would land on your car.
I used a California duster on my 97 328is for years. It never marred the paint. In the begining, it would leave streaks of the paraffin wax thats baked into the fibers.
I now use the griots mf duster. The main reason I like it, is because you can remove the cloth from the handle, and wash it. I used to buy a new california duster once a year.....you cant wash those.
Honestly, the california duster still feels safer than the griots mf duster im using....unfortunately, the paint on my 09 135i is sooooo much softer than my 97 328is
go buy one. just dont use it on an obviously dirty car....make sure you knock it hard against your hand after each panel to get the excess dust off.
Just dont use it on your rear bumper lip, where most of the dirt/dust accumulates.