No, SeaDek is not hard to keep clean. In fact, it is quite easy to clean and maintain. All you need is a mild soap and water solution and a soft cloth or brush. Simply wipe down the surface of your SeaDek with the soap and water solution, using the soft cloth or brush to scrub away any dirt or debris. Rinse thoroughly with fresh water and allow to air dry. That's it! Your SeaDek will look like new again in no time.