Auto Finesse Oblitarate.
Clean your car from all deposits on the paintwork first, by pre-washing, then 2 bucket method and drying. Then spray some onto affected area(s). Leave for 5 mins and wipe off with a clean microfibre. If some still remain after wipe, reapply and wait 5 mins again, then wipe. It will come off eventually. Don't scrub as it will scratch your paint.
Alternative is to use clay bar/mitt but you have more chance of damaging your paintwork if you don't know what you're doing.
Matt