Lemon
It may seem obvious, but we'll say it anyway: To make your fridge mold-free, first remove all items. If it's winter, you can store cold goods outside. Otherwise, keep them in a cooler to prevent spoilage. Then, fill a small bowl with water and squeeze half a lemon into it. Peel the other lemon half and add the peels to the bowl. Place the bowl in the microwave for three minutes at 700 watts.
