Consumer Union's testers have found that, in general, the need for waxing and cleaning furniture with a brand name product is often quite unnecessary. Most furniture won't benefit from waxing because its surface has been sealed at the factory with a durable finish that keeps the wood from drying out and, to some degree, protects against spills and minor scratches. Oils and waxes don't penetrate the finish. The minuscule residue that remains from most polishes after application and buffing contributes nothing to damage control.

Waxing won't improve the shine of furniture whose original finish is still intact. In fact, a furniture polish may muddy the finish. A buildup of wax can darken the wood and mask its grain. Some oils (such as lemon oil) applied to a previously waxed surface can make the surface sticky, vulnerable to fingerprints, and a magnet for dust. Wax containing products applied over some oils won't adhere properly.

Except for old furniture whose original finish may not have sealed the wood very well, or newer furniture that has been used a lot and whose finish may be worn thin, regular dusting with a soft rag slightly dampened with water may be all you need to keep furniture looking fresh and clean.

Home Brews
In addition to plain water and dishwashing liquid, Consumers Union found that using a 1/2 teaspoon of light olive oil added to 1/4 cup white vinegar proved to be just as effective as any store product on wood furniture.