You can clean a microwave with vinegar—mix two tablespoons of vinegar and a drop of vinegar in two glasses or cups of water. Turn the microwave on and let it sit for five minutes. After turning it off, wait for fifteen more minutes. After removing the container, wipe the turntable using a clean rag. Then wipe the sides, bottom, and doors while avoiding to let liquid in the vents. You can also wash a microwave similarly using a lemon. If you want to clean using soap, then you have to remove food crumbs before wiping with a soapy cloth. After that, you can cleanse it and replace the turntable.