Microwave Cleaner -Place 2 small, medium lemons (cut in half)with a cup of water in a microwave safe bowl. Microwave on high for 5 minutes and remove bowl. Wipe out microwave. The same thing can be accomplished with equal parts water and white vinegar (but lemons smell better). If your microwave is encrusted with lots of food residue that is old, it won't be so easy the first time.