To clean baseboards, begin by removing dust and debris with the brush attachment of a vacuum or a duster, then wash the boards using a sponge or cloth with warm water and dish soap or vinegar. For cracks, crevices and other hard-to-reach spots, use a cotton swab dipped in the cleaning solution. After washing, rub the baseboards with a dryer sheet, which protects them from accumulating dust and adds a pleasant smell to the room.
Prior to washing, remove as much dust and dirt as possible, using a vacuum along the crevices where the baseboards meet the floor. When washing, pay special attention to stains and spots of stuck-on grime, especially in the kitchen. If the baseboards are stained rather than painted, be sure to use a cleaning product appropriate for this. Wiping the baseboards with a dryer sheet allows the sheet's anti-static properties to repel dust and helps keep the baseboards clean for a longer time.
Other quick ways to clean baseboards include using a Magic Eraser, cleaning wipes or an old sock sprayed with cleaning solution. The longer the baseboards have gone without cleaning, the more thorough the job needs to be but afterwards a quick wipe-down once or twice a month is typically sufficient to keep them looking tidy.