I use a 50/50 dilution of white vinegar and water on the inside. The outside would depend on what is the cover is made of, so follow manufacturer directions.
Inside , I also use not water and vinegar ... The outside I use not water and a microfiber cloth .
I use Windex.
I agree with pamela - hot water and vinegar or microfiber cloth!
I use a vinegar cleaner also because its great on glass.