Keeping your outdoor sofa clean can be a challenge, especially when dirt stains accumulate over time. Fortunately, there are effective ways to restore its appearance without harsh chemicals. Start by brushing off loose dirt with a soft-bristle brush. For stubborn stains, mix warm water with mild dish soap and gently scrub the affected areas using a sponge or microfiber cloth. Rinse thoroughly with a hose and let it air dry. For tougher stains, a solution of white vinegar and water (1:1 ratio) works wonders—just spray, wait 10 minutes, and wipe clean. Regular maintenance, like using protective covers, can also prevent future stains. With these simple steps, your outdoor sofa will look fresh and inviting all season long.