How to Clean a Microwave
The steam method that does the scrubbing for you. Five minutes of heating, one minute of wiping, and your microwave looks new.
We let our microwave get to the point where opening it felt like investigating a crime scene. Splattered tomato sauce on the ceiling. Unknown dried substance on the walls. A smell that suggested something was still decomposing in there.
Turns out cleaning a microwave takes about 5 minutes of actual effort and zero scrubbing. The trick is letting steam do the hard work for you. Hot steam loosens dried food splatter so completely that it wipes off with a single pass of a damp cloth. No harsh chemicals needed, no elbow grease required.
This method works regardless of how bad things have gotten. Even months of neglect clean up in one session.
A microwave-safe bowl or measuring cup. Water. White vinegar or a lemon (both work, the lemon smells nicer). A clean cloth, sponge, or paper towels for wiping.
Prepare the steam solution
Fill a microwave-safe bowl or large measuring cup with about 2 cups of water. Add 2 tablespoons of white vinegar, or cut a lemon in half and squeeze both halves into the water, then drop the squeezed halves in. The acid from either vinegar or lemon helps break down grease and food residue while also neutralizing odors. If you have no vinegar or lemon, plain water works too. It just requires a bit more wiping effort afterward. Do not use soap in the water. Soapy steam does not help and can leave a residue inside.
Microwave on high for 5 minutes
Place the bowl in the center of the microwave and run it on high power for 5 minutes. The water will boil vigorously and fill the interior with hot steam. This steam condenses on every surface inside, penetrating dried food splatter and softening it from underneath. The walls, ceiling, turntable, and door will all be coated in hot condensation by the time the cycle ends. For extremely neglected microwaves with thick buildup, run for 7 minutes instead.
Let it sit closed for 3 more minutes
When the microwave beeps, do not open the door yet. Leave it closed for an additional 3 minutes. The trapped steam continues working during this time, further softening stubborn spots. Opening immediately releases all the steam before it finishes the job. Patience here saves effort in the next step. After 3 minutes, the interior should be visibly dripping with condensation.
Good to know: Start wiping from the ceiling and work downward. Drips from the ceiling fall onto surfaces you have not cleaned yet rather than ones you already wiped.
Remove the turntable and wash it
Carefully open the door (steam will escape, it is hot). Remove the bowl using an oven mitt or towel. Then lift out the glass turntable and the ring it sits on. Wash both in the sink with regular dish soap and water. These get the most direct food contact and benefit from a proper wash. Dry them and set aside. You will put them back after wiping the interior.
Wipe all interior surfaces
Using a damp cloth or sponge, wipe the interior ceiling first, then the walls, then the floor of the microwave. The steam-softened food should come off with almost no pressure. One or two passes per surface. If you encounter a particularly stubborn spot, press the damp cloth against it for 10 seconds and then wipe. For the door interior, pay attention to the edges and the area around the seal where food particles accumulate. Wipe the entire door surface including the window area.
Clean the exterior and controls
Dampen a cloth with warm water and a drop of dish soap. Wipe the exterior surfaces, including the top (which collects grease and dust), the handle, and the control panel. For touch-sensitive control panels, use a barely damp cloth to avoid liquid getting into the electronics. Dry with a clean cloth. Replace the turntable ring and turntable. Close the door. Done.
That is the entire process. If you do this once a week, your microwave never gets bad again. It takes less time than reheating leftovers. For ongoing prevention, cover your food when microwaving. A damp paper towel over the plate catches most splatter. A microwave-safe plate lid works even better and is reusable. Prevention takes 3 seconds and saves you the cleanup entirely.
Questions we get asked about this
Answers from experience, not a textbook.
A full steam clean once every 1 to 2 weeks is ideal if you use it daily. If you use it less frequently, once a month is fine. Between deep cleans, wipe up any obvious splatter immediately after it happens. Fresh splatter takes 5 seconds to wipe. Dried splatter requires the whole steam process. A quick daily habit prevents the need for intense cleaning sessions.
Do not put soap in the steaming water. Soapy steam does not clean better and can leave a film on interior surfaces that affects food taste. Vinegar or lemon in the steam water works because acids break down grease and food proteins. Use dish soap only for washing the turntable in the sink and for wiping the exterior.
The vinegar or lemon steam method naturally neutralizes odors. For persistent smells after cleaning, place a small bowl of baking soda inside the closed microwave overnight (without running it). Baking soda absorbs odors over several hours. If the smell persists after both treatments, the source might be residue trapped around the door seal or vent areas. Wipe these areas with vinegar solution.
Yes. Diluted vinegar (2 tablespoons in 2 cups of water) is safe to microwave. The concentration is too low to damage any microwave components. Straight undiluted vinegar should not be microwaved in large quantities because the fumes can be irritating to breathe, but the diluted solution in this method produces only mild steam with a slight vinegar smell that dissipates quickly.
Commercial oven cleaners contain harsh chemicals (sodium hydroxide/lye) designed for conventional ovens that heat to 500+ degrees. In a microwave, these chemicals leave residues that are not burned off during normal use. They can contaminate your food with chemical fumes the next time you heat something. The steam method is equally effective and completely food-safe.
Home Maintenance 101
How to Clean a Microwave
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