I would say stay away from the Oxyclean or any oxidizers. Here is my process for professional cleaner.
A home-owner could try the Avenge Neutral Spotter or Home Pro spotter. (Maybe you are already giving customized bottles to your clients.) For the do-it-yourself situation, it becomes a situation of applying enough volume of the spotter to overcome the iodine volume. Allow a short time to work and blot it up.
Iodine / Betadine
Description
This may appear as a golden brown to a very dark brown stain. Iodine or Betadine are commonly used as antiseptics for wounds and hand-washing formulas.
Degree of Difficulty 2
Tools Required
• Extraction equipment
• Gum Getter, tamping brush or spotting spatula
• White cotton towels
Chemicals Required
1) Bridgepoint Avenge Neutral Spotter
2) Bridgepoint RedZone
3) Bridgepoint Encapuguard Green anti-wicking formula
Procedures
1) Apply Avenge neutral spotter to the affected area.
2) Work into stain with tamping brush and towels or Gum Getter or spotting spatula.
3) Allow 3 to 5 minutes dwell time.
4) Extract with extremely hot water.
5) If discoloration persists, repeat the above process using RedZONE. Apply heat using steam iron or wallpaper steamer. Check progress every 30 seconds. Stain should be gone in 2 to 3 minutes.
6) Apply Encapuguard Green to eliminate possibility of wick back.