We all have to do it sometime, and today it's your turn. You've removed all the food and the racks from the fridge. Now mix up a handful of salt in 1 gallon (3.7 liters) or so of warm water and use it with a sponge to clean the inside of the refrigerator. The mixture isn't abrasive, so it won't scratch surfaces. And you won't be introducing chemical fumes or odors.