What are the best methods for maintaining a wood table with a polyurethane finish?

To maintain a wood table with a polyurethane finish, regularly dust and wipe it with a damp cloth. Avoid placing hot items directly on the table and use coasters for drinks. Clean up spills promptly and avoid using harsh chemicals or abrasive cleaners. Periodically apply a fresh coat of polyurethane to protect the finish and keep the table looking its best.