ITI IFNA-339 Nautilus Butter Stainless Steel Knife, 12-Piece Item is dishwasher-safe never let flatware remain soiled overnight, avoid low temperature dishwasher cycles Use only plastic or stainless steel container and a non-abrasive cleaning compound When washing items allow clean ware to air dry for several minutes in a well ventilated area 18-Percent Chrome for Corrosion Resistance to prevent corrosion and film build up your rinse must be thorough Item should be ran through complete wash and rinse cycle in a vertical position