I use microfiber cloths… they work great!! and they’re washable… i dunno what a calafornia duster is, but i’m very pleased with my terry cloths… 5 of them are about 5 bucks at Wal-Mart
all you do is shake the duster out. The dirtier the duster looks the better it works. I thought people were nuts untill I saw older guys with georgous muscle cars out at the QSL curises using them on their cars that were black. I figured they were old and had butifle cars so they must know what is going on… 
yeah i had one once…i think it migrated into jackies trunk, she uses it on her black car and it works great