I have always heard you can clean a microwave easy with lemon juice. Well, I had a spaghetti re-heat explosion. I didn't realize how bad it was because I was heading out somewhere and forgot to clean up the mess in there first. So a few days later, I realized it was all over the ceiling of the microwave. I looked up the instructions to give it a try and OH MY GOODNESS it was the easiest clean up ever and my microwave looks brand new inside.
Another thing I've heard I use all the time now. It is the original blue Dawn detergent for just about anything you can imagine. I use it constantly for hard to remove stains. I have found the best way to remove most hard to remove stains (chocolate, blood, grease, etc.) from clothing is to spray with Peroxide, then squeeze in some blue Dawn and baking soda and I add some spray from the Dollar Tree called Totally Awesome Stain Remover. I rub it in gently to the stain and 99% of the time it comes right out. When Allen fell and hit his ribs on the tub, the wound bled for over a week at night. This concoction got all the stain out of my tan sheets. I swear by it.