How to Clean the Oven:
1. To clean the oven which is not too crusted, put a bowl (medium size) of Ammonia (Handle with care) at the top rack.
2. Put a bowl (same size as the above) of boiling water at the COLD bottom rack.
3. Leave it overnight.
4. Wipe it out with a clean cloth the day after.
Baking soda is a safe and soft cleaning powder. Pour on the sponge and scrub or wipe it on the surface.
Avoid stains on the stove or oven by immediately cover the spillage with salt. Wipe it after the stove or oven is cool.
Clean the top of the stove with vinegar if your stove is coated with enamel. Grease and dirts will be gone and your stove will be clean and shiny.
Removable part of the stove can be washed in the dishwasher after those parts had been cleaned from crust or dregs.
Alternatively:
1. Put those removable parts in a bucket.
2. Sprinkle detergent.
3. Pour with boilng water.
4. Let the water to get warm.
5. Scrub with soft brush (such as toothbrush).
6. Wipe them until clean and dry.