Pour 1/2 cup undiluted bleach into the bottom of your dishwasher.
Load the dishwasher as usual.
Run the dishwasher through the normal cycle.
If any of the stain still persists, fill the soap containers with powdered Tang. Run the dishwasher empty. As strange as it sounds, the acid in the Tang will remove the stains.
Things You Will Need
- Undiluted bleach
- Make sure to clean any vestiges of tomato-based products from utensils, pots or other containers before putting them into the dishwasher to prevent stains in the future, even if your dishwasher can handle tough cleaning jobs with presoaking or scrubbing.