Mix three drops of neutral pH cleaner with 1 qt. of warm water in a clean container.
Fill another clean container with plain warm water.
Moisten a microfiber rag in the solution. Wipe the moistened rag over the marble tabletop to remove food particles, organic debris and grime. As you clean, rinse the rag in the container of warm water to avoid reapplying abrasive debris to the tabletop.
Rinse the tabletop with fresh warm water using a clean microfiber rag.
Wipe the tabletop with a clean terry cloth towel to remove all moisture from the marble.
Apply a coat of impregnating stone sealer to the tabletop every two years to prevent water-based and oil-based stains from permeating the porous marble surface. Follow the sealer manufacturer's directions for proper application techniques.