Baking Soda or Dry Table Salt. These are mild abrasives and can be used
as an alternative to chlorine scouring powders. Simply put either baking
soda or salt on a sponge or the surface, scour and rinse.
Non-Abrasive Soft Scrubber:
1/4 cup borax
Vegetable-oil based liquid soap (such as Murphys Oil Soap)
1/2 teaspoon lemon oil
In a bowl, mix the borax with enough soap to form a creamy paste.
Add lemon oil and blend well. Scoop a small amount of the mixture onto
a sponge, wash the surface, then rinse well.
In a pinch use a commercial non-chlorine scouring powder such as Bon Ami