I once saw a tech log entry, "mouse seen in throttle pedistal." Written off, "Noted. Hangar cat being starved."
In the DC3 you simply opened the side windows. In the jumbo you rig up a hose to the sextant hole. Virtual aircraft such as airbus only have virtual pilots and therefore virtual dirt, so it doesn't matter.
But I'll say one thing for this thread - most of you seem to be aware of who took it in there.