Cleaning a flatbed scanner

My flatbed scanner has a plastic scanning surface, not glass, so I’m wondering what would be the best method to clean it. Just a damp cloth?

(And I was quite surprised to find that no such question is on record in the searches)

depends on what you’re trying to clean off
Quality glass cleaner and a soft paper towel work well.
Anything more potent than that is likely to mar your finish.