Beach wave spray can leave stubborn saltwater stains on outdoor fabric, but with the right approach, you can restore its freshness. Start by rinsing the fabric with fresh water to remove loose salt and sand. Mix a solution of mild detergent and warm water, then gently scrub the affected areas with a soft brush. For tougher stains, a vinegar-water mix (1:1 ratio) can help break down salt residues. Rinse thoroughly and let the fabric air-dry. Avoid harsh chemicals, as they may damage the material. Regular maintenance prevents long-term damage and keeps your outdoor fabrics looking great. For extra protection, consider using a fabric protector spray after cleaning.