Spacer stains on outdoor tables can be stubborn, but with the right approach, they can be removed easily. Start by mixing a solution of warm water and mild dish soap. Scrub the stained area gently with a soft brush or sponge. For tougher stains, use a paste of baking soda and water, applying it to the stain and letting it sit for 10-15 minutes before scrubbing. Rinse thoroughly with clean water. For persistent stains, white vinegar or a specialized outdoor cleaner may help. Always test any solution on a small, hidden area first to avoid damage. Regular maintenance and protective covers can prevent future stains.