Funnily when I got to visit the Google office in London people just left their trash on the floor of the cafeteria for the cleaners..
I think his comment was mostly figurative.
Except no, I saw stuff like that too when I was there along with childish crap like throwing gum in the urinals and googlers acting like entitled jerks towards the cleaning staff.
I met some great people at Google, but I'd be remiss not to mention I also met too many #IAmGoogle sorts (who were all dudes BTW).