Weird Fact: A mouse can fit through a hole the size of a ballpoint pen
During the summer months, mice will generally live outside and remain contended there. But as soon as the weather begins to cool, they seek the warmth of our homes. Because of their soft skulls and gnawing ability, a hole the size of a ballpoint pen (6mm – 1/4 inch) is large enough for them to enter en masse.
Teach your players to hate mice.
(Or Vegan Slugworms, Vilani Kasikir, Denebi Scuttlers, and other small critters who love to violate hull integrity, gnaw on the cargo, foul up life-support, chow down on the wiring, or rot the fuel purification rig.)
“Yeah, that’s what I thought. Mynock.”