Steam clean your microwave!!! I c. Vinegar I c. Hot water Dump in your 2-5 cup glass measuring (pyrex) cup and "cook" in the microwave for 5-10 mins depending on the power of your microwave. **Use an oven mitt to take out of microwave because it'll be rather HOT**Take a damp washcloth and wipe away the grime!!!! You have steam cleaned the microwave! This works really well and I'm excited to pass it along-thanks jillee!!!