Any splitting maul model that has a protective coating on its steel head should already be safe against any potential corrosion. But to further protect your tools, you can take some precautionary steps. Be sure to grease the blade when needed, as it will help to protect the head. It is also important to keep the handle in pristine condition, especially if the splitting maul has a wooden handle. To tend a wooden handle, you should keep the proper wood moisture level to prevent any drying or cracking.