Most home chefs know that you need a good nonstick pan in your collection of kitchen tools. Consumer Reports reveals some easy tips to keep your non-stick pans working year after year. Calphalon warns that storing pans or lids in its nonstick pans will void the warranty. AdBecause nonstick pans are so easy to clean, it’s tempting to take them right from the stovetop to the sink. Steel wool is used to test the surface of nonstick pans, something you should never use on them.