To clean your oven, simply follow these steps
Take a small container and fill it with warm water.
Unwrap a dish tray and place it in warm water for a few seconds.
Once the tablet is wet, remove it from the water and rub it inside the oven door. Rub until all the grease and dirt is dissolved.
Use a dish sponge (with the soft side) to absorb excess dish soap.
Wipe with a damp cloth and dry with a clean, dry cotton cloth.