Regular cleaning and maintenance are essential to keep your pergola in good condition. The best method for cleaning your pergola depends on its material. For wooden pergolas, start by sweeping away any debris or leaves. Then, use a mild soap or detergent mixed with water to scrub away dirt and stains. Rinse thoroughly with a hose, and avoid using high-pressure water, as it could damage the wood. For metal or vinyl pergolas, a mixture of mild soap and water with a soft brush or cloth can be used for cleaning. Avoid using abrasive or harsh chemicals that may cause damage. After cleaning, consider applying a fresh coat of sealant or paint to protect the material and maintain its appearance.