Mixotrophic growth, a combination of photosynthetic and heterotrophic organisms like algae and bacteria, can quickly turn outdoor seating into an unsightly and slippery hazard. Preventing this requires a proactive approach. First, regular cleaning is essential. Use a mixture of water and mild detergent to scrub surfaces weekly, paying extra attention to shaded or damp areas where growth thrives.

Second, choose materials resistant to microbial growth. Polyethylene, teak, or powder-coated metals are excellent choices as they discourage moisture retention. For wooden furniture, applying a sealant or UV-resistant finish can add an extra layer of protection.

Third, ensure proper drainage and airflow. Elevate seating to avoid water pooling, and avoid placing furniture in perpetually damp spots. If possible, position seating in sunny areas, as UV light naturally inhibits microbial growth.

Lastly, consider eco-friendly solutions like vinegar or hydrogen peroxide sprays, which are effective yet environmentally safe. For severe cases, commercial algaecides can be used sparingly. By combining these strategies, you can keep outdoor seating clean, safe, and free from mixotrophic growth year-round.