fill a measuring glass with 1 1/2 cup of water and 1/2 cup of vinegar, set it in the microwave, turn on microwave on for 5 min and go on to another chore... CAUTION-use a towel to grab glass, will be HOT! Take a wet wash cloth and wipe every bit of the mess out. Seriously 6 minutes and I had a clean microwave.
my mom does this-Cleaning fruit - fill sink with water, add 1 C. vinegar, mix. Add all fruit and soak for 10 minutes. Water will be dirty and fruit will sparkle with no wax or dirty film. Great for Berries too--keeps them from molding. I do this with strawberries and they last for weeks!