The quickest and easiest way to clean a microwave oven is to place a handful of wet towels inside and run it on full power for 3-5 minutes. If the grime is tough add a small amount of vinegar with water. The steam will loosen the grime on the walls. Once towels cool down, use them to wipe the oven’s interior.
To deodorize the microwave, combine 1 cup of water with ½ cup of lemon juice in a measuring cup or bowl and heat it on full power inside the microwave oven for 3–5 minutes. Let it stand inside for 5–10 minutes before removing.