Baseboards

Use a treated dust cloth attached to a long handle (or a broom head) to avoid bending over, or use a vacuum wand with a dust brush attachment. Baseboards painted with enamel or oil-based paint that have become scuffed and smudged can usually be scrubbed with a cloth or sponge moistened in an all-purpose household cleaner. Do a final wipe with a damp cloth. This technique may not work as well on latex paint. Regardless of finish, be wary of using abrasive cleaners or pads since a scratched surface will require re-painting.

Baseboard radiator exteriors may be dusted and cleaned as above. See the entry Radiator for more tips on dusting radiator interiors.

Reference: Jeff Bredenberg, editor, in Clean It Fast, Clean It Right: The Ultimate Guide to Making Everything You Own Sparkle & Shine.