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1.
(n) Rodent track marks. rodent trailings.

Phrase use because rodents i.e. mice and rats cannot hold their bowels and thus they leave a continuous trail of poo and urine which leaves obvious trail stains on furniture, along walls, inside cupboards etc.
This couch is full of rat travels! This box of food you had in storage shows signs of rat travels.
by thaibu April 22, 2010