A refrigerator should be cleaned with:

Cleaning a refrigerator effectively requires a solution that is safe for food contact surfaces and can effectively remove grime and odors. Liquid dish soap is a suitable choice because it is designed to cut through grease and food residues while being safe to use around food items.

Dish soap typically contains surfactants that break down stains and make cleaning easier. It is also gentle enough to avoid damaging the surfaces inside the refrigerator, unlike stronger agents which might leave harmful residues or unpleasant smells. Using a simple mixture of dish soap and warm water makes it very effective for routine cleaning.

While bleach and ammonia could sanitize surfaces, their harshness makes them less appropriate for cleaning a refrigerator, as they can leave harmful residues that are inadvisable in food storage areas. Powdered lemonade mix is not a recognized cleaning agent and does not have the properties needed for effective cleaning or sanitization.

Therefore, liquid dish soap is the best option for cleaning a refrigerator, maintaining both cleanliness and food safety.