I gave it a shot in in my microwave. I sprayed it on and left it for about half an hour. By the time I got back to it the dirt was practically dropping off! It wiped off so easily and it all looked sparkly with no scrubbing at all - woohoo! Worked fantastically for my oven too. It's the first time I've been able to see through my oven door since we moved in almost 10 years ago . No oven cleaner has been able to do that!!