Cleaning and maintaining blockout curtains is relatively straightforward. Regular dusting can be done with a soft brush or by using a vacuum cleaner with a brush attachment to remove surface dirt and dust. Generally, most blockout curtains are machine washable on a gentle cycle with mild detergent. It's crucial to avoid using bleach or harsh chemicals, as these substances may cause damage. Once washed, hang the curtains back while slightly damp to reduce wrinkles and allow them to air dry completely.