My husband did a maintenance call at a fire station out in the sticks, to find out why some essential hardware was behaving erratically - upon examination he found that a family of mice had moved into the cabinet and were raising their young in its warmth and security.

As mice leak, their pattering about across the boards was causing all sorts of problems.

Having skewered one on his screwdriver, the DH then explained to the crew why his kit was not working as designed.