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. Fire, smoke, soot, pitch and wood tar
  2. Fruit stains
  3. Graffiti
  4. Grease
  5. Greenish-blue discoloration from slag
  6. Gypsum plaster
  7. Ice cream
  8. Ink
  9. Iodine
  10. Iron rust
  11. Joint sealant smears and overruns
  12. Mildew
  13. Moss