As the IT and facility guy here I can attest to this. Women ALWAYS have food. They have entire convenience stores in their desks. I had the nastiest one of them complain that WE had roaches and I had to point out that SHE had roaches.
Imagine where she lives! Ewwwww!
I used to work in a grocery store, and one filthy hag (filthiness is not limited to the "fairer" sex but in this case "hag" is an apt description) was known by other female staff to never wash her hands after she used the toilet.
That's who is handling you groceries at the check out counter and handing you your change. Pure vile nastiness.
I don't know if women keep their workspaces dirtier than men, but they certainly have a filthy bathroom. Ask any janitor.