How do I know if it's rat or mouse poop?
Michael Gray
Updated on April 29, 2026
Rodent droppings are a good indicator of the pest in your house. Rat droppings are shiny black and 1/2 - 3/4 of an inch long, whereas mice droppings are small and smooth with pointed ends. Chew marks are another telltale sign to distinguish your rodent.