Does the baking soda method work on enamel pans?

Yes. Enamelled cast iron handles the baking soda simmer and paste well, and you can scrub fairly firmly with a non-scratch pad. Avoid steel wool, which can dull or chip the enamel over time, and skip harsh acids on any cracked spots. The simmer-then-soak approach usually lifts burnt residue without bare-metal scrubbing.