Algae stains on a ceramic mosaic outdoor table can be unsightly and difficult to remove. However, with the right techniques, you can restore your table's beauty. Here’s a step-by-step guide to help you tackle this common outdoor furniture issue.

1. Prepare a Cleaning Solution: Mix equal parts white vinegar and water in a spray bottle. Vinegar is a natural disinfectant and works well to break down algae. Alternatively, you can use a mild bleach solution (1 part bleach to 10 parts water) for tougher stains.

2. Apply the Solution: Spray the mixture generously onto the stained areas. Let it sit for 10-15 minutes to loosen the algae. Avoid using abrasive tools that could scratch the mosaic tiles.

3. Scrub Gently: Use a soft-bristled brush or sponge to scrub the stains. Focus on grout lines where algae often accumulate. For stubborn spots, repeat the application and scrubbing process.

4. Rinse Thoroughly: Rinse the table with clean water to remove any residue. A garden hose works well for this step.

5. Prevent Future Growth: To keep algae from returning, consider applying a sealant to the mosaic tiles and grout. Regularly clean the table and keep it dry when not in use.

By following these steps, your ceramic mosaic outdoor table will look as good as new. For persistent stains, consult a professional cleaner for specialized treatments.