Mrs Bear cleans my shiny racks.
I keep the water pan covered with foil, and I removed the bottom pan, and cover the floor with foil too.
The only thing I actually clean is the glass & door, and the best I've found is "Awesome". I also clean the 2 sensors on the back wall now & then.
The walls & ceiling I wipe with a dry rag, if anything becomes loose & could fall on my food.
Bear