Mouse droppings 2 500sq

Mouse droppings, close-up beside a millimetre ruler.

Single or small groups of mouse droppings are often the first sign of a mouse in the house.  These droppings, left by a mature male mouse, were up to 5-6 mm long. Tiny fragments of the mouse's food can be seen.

Photograph: by Astrid van Meeuwen-Dijkgraaf