This can't be good for my computer.
I have someone who lives with me who insists on putting dishes on my laptop and desktop keyboard in an effort to get me to "Clean them up." I keep telling them that this can't be good for the computer and to stop. I work full-time, 48hrs+ per week and no, putting dishes away when I'm leaving for work IN MY OWN ROOM is not at the top of my priority list until I get home at the very earliest. I want to know if this does any damage to the laptop. They usually aren't filled with water or coffee, but sometimes just crumbs from plates.
Sidenote: This room is my own room. They shouldn't even be coming in, in the first place. I am responsible for my own dishes, laundry, ect.