Which characteristic of adult rat droppings helps in identifying a rat infestation?

The characteristic of adult rat droppings that is most helpful in identifying a rat infestation is their size and shape. Adult rat droppings are typically about ½ inch long and shaped like a capsule or a spindle, which distinguishes them from the droppings of other pests like mice or squirrels, which are generally smaller and different in form.

Recognizing the size and shape of these droppings is essential for pest control professionals, as it allows them to accurately determine the type of rodent present and to develop an appropriate management plan. While color, location, and odor can provide additional context in the identification process, the size and shape of the droppings are the most definitive factors in confirming a rat presence.