Use baking soda to clean your dishwasher by hand. Take out any easily removable parts, like the rack and the filter. Then, mix together baking soda and water and apply the paste to your dishwasher with a soft-bristled brush or microfiber cloth. Wipe down the inside and the parts you removed. Rinse the parts off with water, then run a short hot-water cycle to finish cleaning the inside of the machine