Algae stains on plastic outdoor tables can be unsightly and difficult to remove, but with the right techniques, you can restore your furniture to its original condition. Here are some effective methods to tackle algae buildup:

1. Vinegar Solution: Mix equal parts white vinegar and water in a spray bottle. Apply the solution to the stained areas and let it sit for 10-15 minutes. Scrub with a soft brush or sponge, then rinse thoroughly with water.

2. Baking Soda Paste: Create a paste using baking soda and water. Apply it to the algae stains and gently scrub with a non-abrasive brush. This method is gentle on plastic but effective at breaking down algae.

3. Bleach Dilution: For tougher stains, mix one part bleach with four parts water. Apply sparingly to the affected areas, scrub lightly, and rinse immediately to avoid discoloration.

4. Pressure Washing: If your table is heavily stained, a pressure washer on a low setting can help blast away algae. Keep the nozzle at a safe distance to prevent damage to the plastic.

5. Preventive Measures: To avoid future algae growth, store your table in a dry place when not in use or cover it with a waterproof tarp. Regularly cleaning the surface also helps prevent buildup.

By following these steps, you can keep your plastic outdoor table clean and algae-free all season long.