We really don’t clean our fridges as often as we should. All it takes is a little white wine vinegar or some baking soda and you’re good to go! Another tip is to leave half of a lemon inside (to eliminate odors) as well as a thermometer (to keep an eye on temperature fluctuations). Or you can leave out some baking soda in a little bowl: it will absorb humidity and bad smells without you having to do a thing!