<human>: How would someone go about accomplishing this goal?
how to remove stains from marble

OPTIONS:
- Mix a few drops of ammonia with 12% hydrogen peroxide to spot clean the stained area. However, be careful when using this method on darker stones as the hydrogen peroxide can lighten the color of the marble.
- Mix a few drops of ammonia with 12% hydrogen peroxide to spot clean the stained area. However, be careful when using this method on darker stones as the hydrogen peroxide can darken the color of the marble.
<bot>: Mix a few drops of ammonia with 12% hydrogen peroxide to spot clean the stained area. However, be careful when using this method on darker stones as the hydrogen peroxide can lighten the color of the marble.