If you can't put it in your mouth, don't put it on the table.
Use a MILD solution of Dawn Dish Detergent (original blue formula) and water:
1 TEASPOON Dawn to 1 GALLON water
Unlike many things in this world (whipped cream, chocolate, money...) more detergent is not better. More detergent will damage the finish or leave a film on the surface.
DO NOT USE: Windex, Formula 409, Simple Green, Clorox Cleanup or other kitchen and bath cleaners, they will DAMAGE the finish.
Waxing and polishing our furniture will not protect the finish, only make it shinier. Over time, the wax and polish will attract a layer of grime.
Alcohol, nail polish and remover, acetates, vinyls (synthetic rubber and catalogue binders) and any hard-to-spell, fast-drying chemical will harm our finishes. Water puddled beside an iced tea glass for an hour or two will not hurt our finish. A hot plate will, without a doubt, hurt our finish. You wouldn't put a hot iron skillet on your Steinway - don't put it on your Wright Table.
Earthenware or any pottery with a rough underside should be lightly sanded with 180 or 220 grit sandpaper to remove any rough burrs. The more rustic the pottery, the more likely the burrs will exist. These burrs will scratch the finish, requiring immediate repair. We suggest carefully applying felt pads to the underside of each item, or lightly removing the burrs as mentioned.
The point of a knife, tine of a fork and other weapons of destruction dropped on the table will break through the protective lacquer film. That break, however small, should be repaired by a practitioner of the art. Your furniture dealer knows such a person.