Before trying to remove stains, study the general principles and methods that make success possible, particularly the use of bandages and poultices. Those have been discussed in the first article in this series which appeared in the June 1986 issue of Concrete Construction. This article gives the supplemental information necessary for removing specific kinds of stains. The stains mentioned are: 1. Aluminum 2. Asphalt 3. Beverages 4. Blood 5. Bronze and copper 6. Candy and confectionery 7. Caulking compound 8. Chewing gum 9. Clay 10. Coal tar 11. Creosote 12. Curing compound 13. Dirt 14. Efflorescence 15. Epoxy coatings and epoxy adhesives 16. Finishing-and-curing discolorations.