Hello together, drive since about 8 months. a black-metallic-colored S 60 D5. Have the special problem that some of the neighbors indulge in pigeon sport. Did recently more often notice that even short-term adherent feces of the possible animals lead to only hard to remove residues on the paint. Has the paint used today (due to environmental protection etc.) really become so sensitive?? Does anyone have tips on how to eliminate such residues permanently leave it?? mfg Werner