Here is a cheap, easy and environmentally friendly way to clean your microwave. Fill a micrwave safe bowl about 2/3 of the way full with water and add 1/8 c. of lemon juice. Microwave for about 4 minutes. Let it sit in the microwave for another 4 minutes. The combo of the steam and the lemon juice will eat the crud off of your microwave walls. Once it has had time to do its job, carefully remove the hot water and wipe out the microwave. All the splatters will easily come off and your microwave will be sparkling clean!