I, much to my dismay, accidentally overcooked a bag of popcorn in my microwave and now have "butter" sprays on the inside walls-any ideas on how to clean it? Thanks.

You can find those things (forget what they are called) that you put in the microwave, and it pops open when its on melting it away... never tried it though, have tried mean green, or baking soda. The turn table you can just take out and scrub with dish soap. The baking soda really just scours at the surface though.

Hi,
One of the best cleaners is a mixture of Ammonia and Water.
I use an old Windex spray bottle, filling it 3/4 of the way with water, then filling it up to the top with Ammonia. (either clear or cloudy).
Spray it inside your microwave, let it soak maybe 5 minutes or so, then wipe it off with paper towels.
Works for me... Best of luck.