To prevent knives (and other metal items) from rusting in the dishwasher, follow these tips:
Handwashing: The best way to ensure your knives stay in good condition is to handwash them. After using your knives, wash them with warm, soapy water and a soft sponge. Rinse them thoroughly and dry them immediately with a clean towel. Avoid leaving them to air dry as it can promote rust formation.
Separate from Other Metals: If you decide to use the dishwasher, separate the knives from other metals, especially stainless steel items. When different types of metals come into contact in a humid and warm dishwasher environment, it can lead to a chemical reaction that accelerates rusting. Keep your knives isolated from other metal items in the dishwasher.
Avoid Harsh Detergents: Some dishwasher detergents can be abrasive and harsh on metal surfaces, potentially promoting rust formation. Use a mild detergent specifically designed for dishwashers and avoid those with high chlorine content.
Don't Let Them Sit: If you must put your knives in the dishwasher, remove them promptly after the cycle is complete. Leaving knives or any metal item sitting in a damp environment can lead to rust formation.
Dry Thoroughly: Before storing your knives, ensure they are completely dry. Even if you handwash them, residual moisture can still be present. Use a clean, dry towel to wipe them dry thoroughly before putting them away.
Store Properly: Store your knives in a knife block, magnetic strip, or on a magnetic knife holder. Avoid storing them in damp or humid environments like the sink or a drawer where moisture can accumulate.
By following these steps, you can reduce the risk of your knives rusting in the dishwasher and maintain their longevity and performance. However, remember that handwashing is generally the safest option to preserve the quality of your knives.