How to Clean a Microwave Oven Inside: Step-by-Step

Why Regular Cleaning Matters

Food splatter baked onto the interior walls absorbs microwave energy, forcing the oven to work harder and reducing heating efficiency over time. A clean microwave heats faster, smells fresh, and lasts longer. The methods below use items already in your kitchen — no harsh chemicals needed.

Method 1: Steam Clean with Lemon or Vinegar (Best for Regular Cleaning)

This is the quickest and most effective method for general grease and food residue. The steam loosens dried splatter so it wipes away without scrubbing.

  1. Fill a microwave-safe bowl with 250 ml of water.
  2. Add either the juice of half a lemon (drop the squeezed half in too) or two tablespoons of white vinegar.
  3. Place the bowl on the turntable and microwave on full power for 5 minutes.
  4. Do not open the door immediately — let the steam sit inside for another 3 minutes. This continued steaming softens even stubborn residue.
  5. Carefully remove the bowl (it will be hot — use a cloth or oven mitt).
  6. Wipe the interior ceiling, walls, and floor with a damp microfibre cloth. The grime will come away with minimal effort.
  7. Dry with a clean cloth to prevent moisture build-up.

Method 2: Baking Soda Paste for Stubborn Stains

For burnt-on food that the steam method does not fully remove, a baking soda paste provides gentle abrasive action without scratching the interior coating.

  1. Mix two tablespoons of baking soda with enough water to form a thick paste.
  2. Apply the paste directly to the stained area using a soft cloth or sponge.
  3. Leave it to sit for 5 minutes.
  4. Scrub gently in circular motions — the mild abrasive action lifts the residue without damaging the enamel or painted interior.
  5. Wipe clean with a damp cloth and dry thoroughly.

Cleaning the Turntable Plate

The glass turntable accumulates grease and food particles that the steam method may not reach.

  • Remove the turntable plate and the plastic or roller ring beneath it.
  • Wash both in warm soapy water or place the glass plate in the dishwasher (check your model’s manual — most LG and Samsung turntable plates are dishwasher safe).
  • Wipe the turntable well (the circular track inside the oven) with a damp cloth before replacing the ring and plate.
  • Ensure the plate is completely dry before placing it back to avoid cracking from thermal shock during the next use.

Removing Burnt Smells

A persistent burnt or stale odour means food residue has carbonised on the interior surfaces or on the hidden ceiling vent area.

  • Baking soda overnight method: Place an open bowl containing three tablespoons of baking soda inside the microwave (unplugged or just with the door closed, no power needed). Leave overnight. Baking soda absorbs odour molecules effectively within 8 hours.
  • Lemon steam repeat: Run the lemon steam method described above twice in a row if the smell is strong — the citric acid neutralises odour-causing compounds.
  • Ventilate: After cleaning, leave the door open for 30 minutes to allow residual moisture and odour to dissipate.

Cleaning the Door Seal

The rubber door gasket traps grease and crumbs, and a dirty seal can affect the door’s ability to close properly.

  • Dip a cotton bud or soft toothbrush in warm soapy water.
  • Gently clean along the entire length of the door seal, paying attention to the corners.
  • Wipe with a clean damp cloth and dry. Do not use bleach or abrasive cleaners on the seal — they cause the rubber to crack over time.

Quick Maintenance Tips

  • Cover food every time — a microwave-safe lid or splatter cover takes two seconds to place and eliminates most cleaning work.
  • Weekly wipe-down — a 60-second wipe with a damp cloth after each week of use prevents build-up from hardening.
  • Deal with spills immediately — fresh spills wipe away in seconds; the same spill baked on for a week requires the baking soda paste method.
  • Do not use metal scourers — they scratch the interior coating and create hotspots that damage the oven over time.

A well-maintained microwave lasts significantly longer. If you are in the market for a new model, our guide to the best microwave oven India will help you choose wisely. And if you want to trade in your existing appliance, find out how to sell your old microwave in Bangalore at a good price.

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