I clean the microwave until it shines in 2 minutes, even from old grease: no need to rub anything

Water quickly softens the dirt, and after wiping with a sponge, not a trace remains. We finish cleaning by walking over the surfaces with a napkin, collecting the remaining moisture, not forgetting about the tray.

The method is simple, and its effect is clearly visible; you can even deal with dirt that has been ingrained for a long time.