Heavy layers of oxidation take years to develop, so a more robust solution is sometimes needed for full cleaning. Often patio tabletops show the most significant levels of white oxidation and need the walnut pad to get them clean. Link to video:  How to Use the Walnut Pad1. The walnut hand pad is needed when you have heavy oxidation stains embedded in the metal. 2. Use the walnut hand pad for a deeper level of clean not achieved with the microfiber towel alone.3. Pads should be used on a surface still wet with Step 1 AL-NEW Clean.  Test the walnut hand pad in a small area before using on the entire object.4. Dipping the walnut had pads in Step 1 AL-NEW Clean is a great technique to increase lubricity and improve the effectiveness of cleaning.5. Agitate the surface with the walnut hand pad using light pressure, which will lift oxidation6. Follow passes of your walnut pad with a wet microfiber towel to clean off oxidation7. Continue use of the walnut hand pad untilvisible white oxidation has been cleaned8. Allow the now clean surface to dry.Dry time is subject to environmental conditions such as direct sun or shade, temperature, and humidity.