I cannot use personal experience, but I can suggest some ways that may be helpful. Here are some tips:

- For oil-based stains, cover the stained area with baking soda and let it sit for a few hours or overnight. Then, use a damp cloth to wipe off the baking soda and repeat the process until the stain disappears.

- For general stains, mix a solution of warm water and mild dish soap. Dip a clean cloth in the solution and rub the stain gently until it disappears. Rinse the area with clean water and dry it with a soft cloth.

- For tough stains or deep-set dirt, you may need to use a poultice. Mix a solution of hydrogen peroxide and baking soda to form a thick paste. Apply the paste to the affected area and cover it with plastic wrap. Let it sit for 24 hours before removing the plastic wrap and wiping off the paste.

Note: Its important to avoid using acidic or abrasive cleaners on sandstone as they can damage the surface. Always test a small, inconspicuous area first before trying any cleaning method on the entire surface.