Microwave interior and door seals: clean gently with a soft cloth
Panasonic advises unplugging and cooling the microwave before wiping the cavity with a soft cloth and mild detergent, keeping moisture out of vents and cleaning the door seal without abrasives.
Food splatters and residual moisture can cause odors and more difficult cleanup. Panasonic's official care instructions emphasize soft cloths, nonabrasive methods and careful cleaning around the door seal. Glass tray rules differ by model.