Mildew stains on a metal outdoor table can be unsightly and difficult to remove if not treated properly. Fortunately, with the right techniques, you can restore your table to its original condition. Here’s a step-by-step guide to effectively eliminate mildew stains:

1. Prepare a Cleaning Solution: Mix equal parts white vinegar and water in a spray bottle. Alternatively, use a mild dish soap solution with warm water.

2. Scrub the Stains: Apply the solution to the affected areas and scrub gently with a soft-bristle brush or sponge. Avoid abrasive tools that could scratch the metal surface.

3. Rinse Thoroughly: Use a hose or a damp cloth to rinse off the cleaning solution. Ensure no residue is left behind.

4. Dry Completely: Wipe the table dry with a clean towel or let it air dry in the sun to prevent moisture buildup, which can lead to future mildew growth.

5. Prevent Future Stains: Apply a protective wax or sealant designed for metal surfaces to create a barrier against moisture and mildew.

For stubborn stains, a paste of baking soda and water can be applied before scrubbing. Regular maintenance and keeping the table covered when not in use will help keep mildew at bay.