A. Your local carpet cleaning supply store will carry rust remover. I would go with a user friendly or safe chemical. Some of the strong acids are corrosive to the skin and lungs.
Whink is a household rust remover that works quite well. Another safe option is to mix your carpet extractor acidic rinse agent 1:5. Spray on, let set 5 min. and then towel. Also, vinegar diluted 1:3 will remove light rust from carpet.
If you are unable to locate a commercial rust remover. We have one that comes in quart bottles, 12 to the case and works great.
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