Rust Eraser for Carbon Steel Crafted in Japan from a firm rubber compound, the Niwaki Mini Clean Mate removes sap, oxidation, and surface grime from carbon steel without wearing down the blade. A few passes keep edges clean, smooth, and ready for the next cut. How to Keep Blades Clean This garden tool cleaner works best with a little moisture. Add water, rub away rust and sap, and wipe clean with a cloth as you go. Once the residue is lifted, dry the blade and apply a light coat of camellia oil or food-grade mineral oil to protect the steel. When working with shears, wrap the blade not in use for safer handling. Simple Care, Lasting Tools Small enough to slip into a pocket or garden pouch, this rust eraser stays close at hand for shears, pruners, axes, and kitchen knives alike. Pair with our Japanese Garden Tools, where routine care keeps the edge sharp and the finish protected.