Reaching into the recesses of the fridge to wash down racks, shelves and drawers makes a good stretching routine. If you'd rather avoid the calisthenics, just submerge these parts in a sink or tub of warm water and baking soda. (You can add a splash of dishwashing liquid, but some people say traces of the soap linger in the compartment and leave food with its distinctive taste and smell.) Dried food will soak off, and odors will dissipate. Be careful about putting cold glass shelves into hot water, however. The sudden temperature drop can cause them to crack.
While these pieces take a bath, take a toothbrush with cleansing powder to brackets and gaskets. Bacteria can hide in these and other hard-to-reach areas, while the moist, airtight environment formed by door seals makes them prime targets for mold. Dry all pieces well to discourage these unwelcome microbial guests.
Before returning the removable pieces, you need to attend to the compartment. Our next step explains how.