make your own dishwasher pods using some common household products and the ever so handy ice cube tray. All you need is baking soda, borax, vinegar, a bit of salt and some essential oil for a nice scent.
Steam clean your microwave - place wet sponge in microwave, spray all inside surface. Run microwave for two minutes. When sponge has cooled off enough to handle, wipe down inside and outside of microwave.