Photolithoautotrophic growth, such as algae and mold, can quickly degrade the appearance and durability of outdoor seating. To combat this, regular cleaning with a mixture of water and mild detergent is essential. For tougher cases, a solution of white vinegar or hydrogen peroxide can be applied to kill spores. Additionally, using UV-resistant and waterproof covers when seats are not in use helps block sunlight and moisture, which are primary contributors to growth. For long-term prevention, consider applying a protective sealant designed for outdoor furniture. Lastly, positioning seating in shaded areas or using fans to improve airflow can significantly reduce the risk of photolithoautotrophic organisms thriving. By implementing these strategies, you can maintain clean and attractive outdoor seating year-round.