First, determine what kind of finish or top coat your wood furniture has. Is it polyurethane (like the finish on some wood floors) or water-based? Is it coated with varnish? Is it rubbed with a wax that makes it silky smooth to the touch?
Next, check the directions and ingredients of your polish to make sure the product is compatible with the piece. Look for harsh chemicals that may pull out a stain or alter a finish. Some products may dull the wood`s surface, others could darken or yellow it. And if the product promises a high sheen, avoid using it on unfinished or waxed wood.
For all types of wood, start the cleaning process by gently dusting the piece. Using circular motions, wipe with a slightly damp, soft cloth. If you need to work on a small spot, dilute a bit of dishwashing liquid in water. After adding the smallest amount of soap possible and testing on a hidden spot, dip a soft cloth into the treated water and wring nearly dry. Wipe the spot, then wipe clean using a barely-damp cloth. Finish with a dry cloth.