Maintain the performance and appearance of eTek™ 9 oz. Coated Polyester fabric through regular, proactive care. For water-based stains, clean using a mild detergent foam or approved upholstery shampoo. For oil-based stains, apply a dry-cleaning solvent after first testing on an inconspicuous area to ensure material compatibility. To prevent accumulation of dirt and contaminants that may result in permanent staining, routine cleaning is strongly recommended. Cleaning frequency should be based on the specific environmental exposure and application conditions.