One way to clean all that stuff that sticks to your microwave is to take about a tablespoon of baking soda (bicarbonate of soda) and put it in a microwave-safe bowl filled about half full with water. Microwave for about three minutes ONLY and the stuff wipes right off. (see warning below)Warning: It is important not to heat fluids in your microwave for long periods as they can become super heated, this can cause an irruption within the fluid even after the vessel has been removed from the microwave. This irruption can send scolding super heated fluid in your direction.