All are good suggestions for cleaning and another one is after the initial cleaning, use fresh lemon juice and baking soda and also scrub with it and then rinse it with a wet towel and dry. Then leave open until it is thoroughly dry. We close up our trailer for about 7 months out of the year and that is my final step after cleaning and wiping down and I prop the door open a few inches while it is in storage, plus I put a box of baking soda in it. Could be overkill, but for 8 years now we have not had a problem. But do have a nice, clean, fresh smelling fridge.