in exactly the spot where the boom mike sits. YUCK!!
As I have told a few women "you should be careful what you put near or in your mouth."
On the aircraft I have flown when the cabin is cleaned the cleaning staff have all ways hovered the Flight Deck and cleaned out the ash trays. But to not clean the personal rubbish away. That is and should be the responsibility of the crew member that occupies that work place.
In reply to
HKP original post regarding checklists if these are used as toothpicks and you feel strongly about this, remember a defaced checklist has to be replaced and an entry in the tech log will ensure this
As for the headsets and oxygen masks the personal use of antispectic wipes is the simple solution