Lightly scrub away dried dirt with a soft bristle brush. For spots, try using just cold water on a damp cloth (not soaking wet). If soap is needed, use cold water and a small amount of mild liquid soap applied to a clean cloth and gently rub onto the spot. Wipe away any soap from the canvas with cold water on a damp cloth and air dry. Do not machine wash or dry, do not dry clean or use hot or warm water to clean. Do not use detergent.