Diatom growth on outdoor seating can be unsightly and slippery, posing both aesthetic and safety concerns. Fortunately, there are several effective methods to prevent and control this issue.

1. Regular Cleaning: Wash outdoor furniture weekly with a mixture of water and mild detergent. Scrubbing with a soft brush helps remove early diatom buildup.

2. Vinegar Solution: Spray a solution of equal parts white vinegar and water on affected areas. Vinegar’s acidity kills diatoms and prevents regrowth.

3. Bleach Treatment: For stubborn growth, use a diluted bleach solution (1 part bleach to 10 parts water). Rinse thoroughly to avoid surface damage.

4. Proper Drying: Ensure seating dries completely after rain or cleaning. Diatoms thrive in damp environments, so keeping surfaces dry is key.

5. Protective Coatings: Apply a UV-resistant sealant or algae-resistant paint to create a barrier against diatom attachment.

6. Shade Management: Reduce moisture retention by placing furniture in well-ventilated areas or using breathable covers.

By combining these strategies, you can maintain clean, diatom-free outdoor seating year-round. Consistency is crucial—regular upkeep prevents persistent algae problems. For eco-friendly alternatives, consider using baking soda or hydrogen peroxide solutions instead of harsh chemicals.