When marble is damaged.
Bleach damage marble.
Bleach can be used sparingly in certain situations in a very very dilute solution but more often than not people get the mix wrong and etch their marble.
You can remove mold with a diluted bleach or peroxide solution but it s best.
This includes brand name cleaners as well.
Unfortunately most common and popular household cleaners like bleach vinegar ammonia citrus cleaners and hydrogen peroxide are too harsh for use on marble and will cause damage to the finish.
Bleach is alkaline so it doesn t pose the big risk of acidic cleaners which dissolve sensitive stone including marble.
Etching is corrosion that eats away at the marble which will cause dull and light colored or clear spots.
The damage from bleach stems from an entirely different characteristic.
Before you apply the diluted bleach it is important to thoroughly wet the area with clean water.
Almost every guide for the care and maintenance of marble warns that you should not use bleach vinegar or other harsh cleaners.