Now I know why Wyze started pre-order for the handheld vacuum…look at all the dust on top of the robot vacuum.
This happens to mine too. The glossy finish makes it a bit more noticeable.
A little wipe with a dry cloth(microfiber if available) is the best method to clean it off.
I wiped mine with a disinfectant cloth and it clearly shows the dried liquid.
The glossy black can probably be improved for future versions.