Yellow highlighter colored marks on floor

Q: We just discovered stains that look to be small splatters of liquid on our light hardwood floors. They are the color of yellow highlighter. The house was brand new when we moved in, in January, nine months ago. We hadn’t noticed them until this afternoon. We cannot figure out what they might be. They seem to trail across the kitchen.

We’ve tried Dawn with water, a magic eraser, peroxide, vinegar, a scrub daddy.. Someone suggested oil soap, which we need to buy still, so we haven’t tried it yet.

A: I have no idea what the yellow spots are but the last thing you want to use is an oil soap which can leave a residue on the finish which both dulls the finish and creates adhesion issues if you want to re-coat the floor. Try a little alcohol or some floor cleaner from a manufacturer who makes products for floors finished with polyurethane.

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