Kenshin - Found this online not sure how useful it will be. Care of powder coated finishes Powder coated surfaces require routine cleaning to remove dirt and grime. This will ensure the decorative and protective properties of the coating are retained. The frequency of such cleaning will depend on many factors but should be carried out every six months. In industrial and coastal environments, cleaning should be carried out more frequently, paying particular attention to areas not normally washed by rain. The best method of cleaning is by regular washing of the powdercoated surface with a soft cloth or sponge, using nothing harsher than normal bristle brushes with a solution of warm water and mild detergent. Surfaces should be rinsed with fresh water after cleaning to remove all residues. Do not use strong solvents such as lacquer as they will damage the coating.