Most stains on marble will require the use of a poultice made with white cleansing tissue and whiting or powdered household cleaner mixed with a little water. The poultice should be soaked in this solution and kept from drying out while it is on the marble. It can be covered with a piece of glass or a sheet of plastic to keep the moisture from evaporating while the stain is being drawn out, which may take from 1 to 48 hr.
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