Mix ½ cup vinegar, ¼ cup baking soda and ½ gallon of water to make a natural, all-purpose cleaner.
Spray the all-purpose cleaner on the china cabinet and wipe it off with a microfiber cloth to remove the top layer of dirt.
Dampen a cloth with paint thinner and rub it firmly on the inside of the china cabinet door as a test to ensure that the finish does not rub off. Wear gloves for protection.
Rub the paint thinner on the outside of the china cabinet with firm movements, if it did not damage the inside test area. Fold the cloth as dirt accumulates and replace with another cloth when needed.
Apply furniture polish or wax according to the package directions if the finish has become dull after cleaning is complete. If damage occurs, you may need to refinish the china cabinet.