Do not buy microwave cleaning products or srays etc. when your microwave is splashed with dried on food simply put a mug of hot water into the microwave and heat on full power for 4-5 mins depending on your heating level, it will simply wipe off spotlessly clean from the steam that is generated in side. if you add some fresh lemon juice into the water before heating it will also get rid off stale smells. try it it really works and saves time scouring and scrubbing.