Removing grease pencil marks from an outdoor sofa can be tricky, but with the right approach, you can restore your furniture to its original condition. Here are some effective methods to tackle the problem:

1. Dish Soap and Warm Water: Mix a few drops of mild dish soap with warm water. Dip a soft cloth or sponge into the solution and gently scrub the grease pencil marks. Rinse with clean water and let it air dry.

2. Rubbing Alcohol: Apply a small amount of rubbing alcohol to a cotton ball or cloth. Dab the stained area, being careful not to spread the mark. Wipe away the residue with a damp cloth.

3. Baking Soda Paste: Create a paste using baking soda and water. Apply it to the grease pencil marks and let it sit for 10-15 minutes. Scrub gently with a soft brush, then rinse thoroughly.

4. Magic Eraser: A magic eraser can be highly effective for stubborn marks. Lightly dampen the eraser and rub the stain in circular motions. Rinse the area afterward to remove any residue.

5. Commercial Cleaners: If DIY methods fail, consider using a commercial cleaner designed for outdoor furniture. Follow the manufacturer’s instructions for best results.

Always test any cleaning solution on a small, inconspicuous area first to ensure it doesn’t damage the fabric or material. Regular maintenance and prompt cleaning can help keep your outdoor sofa looking fresh and stain-free.