How do you remove sharpie marker stains from hardwood floors?

Non-acetone polish remover (or rubbing alcohol) worked great with a cotton ball. For slightly more set-in stains, let it sit for a short time.

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Try toothpaste! Believe it or not, it works great on removing permanent Sharpie markers. Also try hairspray as an alternative. It took Sharpie ink off hardwood floors, after household cleaners did not work.

(NOTE : hairspray and other solvents should be tested somewhere inconspicuous first!)

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"Magic Eraser Pad" removed it (after a half hour's work with other products failed). It was an impressively complete cleaning of multiple sharpie scribbles. Normally you would expect to have to sand the wood and restain it. The Magic eraser product costs about $1.50 each, retail.

Note - Toothpaste and eraser pads work on abrasion, so be careful you don't take off too much of the finish.

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One product Sharpie itself recommends is Amodex Ink and Stain Remover. Its specialty is removing ink from clothes and fabrics (which is very difficult), so it removes Sharpie from wood and similar surfaces with little or no trouble.

The product is a liquid soap, so you just pour a little on the stain, let it sit for a bit, and then wipe it away. The product works by "lifting" the dye of the Sharpie from the wood surface, so the ink will be in the soap that you wipe off.