Here are some poultice recipes diy solutions that can help tackle them i ve also tucked in a recipe you can use for everyday cleaning.
Marble stains cleaner.
Cultured marble is different from natural marble in that it has a resin finish that is non porous and more resistant to stains.
How to clean cultured marble.
The best way to address mold stains is to use a product that is specifically designed for removing mold and mildew stains on marble such as this one.
1 x research source clean up orange juice wine and coffee as soon as they are spilled.
Marble stains very quickly especially if a liquid is allowed to sit untouched for a period of time.
Follow the above directions for removing rust stains from marble to effectively remove organic stains.
In most cases this should be sufficient to remove the water stains however if this does not work then we recommended trying a marble cleaner specifically designed to remove hard water stains and soap scum.
You can create a marble poultice using 6 hydrogen peroxide and a few drops of ammonia.
If you spilled anything oil based like a vinaigrette.
You can either use regular marble cleaner or try removing the stain using grade 0000 steel wool.