How to Clean a marble floor

Shiny marble floors practically scream "wealth and substance"—so if you want your marble floor to scream it too, it's time to get shining.

Dilute a tiny amount of the mild cleaning detergent into one of the buckets of water.

Never use acidic detergents on marble surfaces—it will dull and destroy them.

Soak the sponge in the detergent water and wring it out until it's merely damp.

Sponge the marble floor clean in steady, arching motions. For stubborn stains, scrub vigorously with a soft-bristled brush.

Always wipe up spills immediately to protect the marble from permanent damage.

Rinse the cleaned area with warm water from the other bucket.

Immediately dry the surface with soft, dry towels.

Donald Trump's $42 million Palm Beach estate includes a ballroom with 11,000 square feet of marble floors—and, hopefully, a full-time marble floor cleaner...