My microwave is used mainly to heat up left overs and the obligatory baked beans, somehow I always manage to buy exploding beans which just love to plaster themselves all over the insides. So the easiest way I've found to clean the grime is to use lemon juice, and very, very little elbow grease.
I put about 2 tablespoons of lemon juice in a little microwave bowl, place it inside on the turntable and switch it on for 2 minutes. Take a damp cloth and wipe down, if the splatters don't come off easily, then put the bowl with the lemon back in and reheat for another 30secs to minute, repeat as necessary. All being well it should take no time to clean.
BEFORE: a very embarrassing picture of the inside ceiling of my microwave.
AFTER: all I did was one quick wipe to demonstrate how easy removing the splatters is,
of course you can take more time to get it uber clean.
Please take care as the lemon can become very hot, the measurements and times used are suitable to me and I cannot accept responsibility for any mishaps,my tips are given in good faith.





