You want to save time—and let's be honest: Who wants to do dishes when you don't have to?—but tossing certain things in the dishwasher will only cost you more (in money, time and sheer, unbridled rage). Here's what they are. 1. Enameled Cast-Iron Pots and Pans Though many enameled pans are technically dishwasher safe, Le Creuset warns that regular dishwashing can dull the enamel, and some people have complained about it chipping in the wash. 2.