The easiest way to clean a fridge is to wipe it down with a solution of baking soda and water. First, begin by taking everything out of the fridge. Then, please turn it off to be on the safe side. Mix the solution in a spray bottle, spray it on the interior, and wipe it down with a clean cloth. Repeat it until everything is cleaned. Make sure to defrost your fridge if it is a single-door refrigerator.