
If you see some droppings, the nest is probably nearby. Mouse droppings look like pieces of black rice. You may also be able to track down the mouse by looking for droppings.government agency responsible for promoting safe environmental practices Go to source X Trustworthy Source United States Environmental Protection Agency Independent U.S. Look in the back corners of closets, under the sink, behind the refrigerator, in cracks in the wall, and in any other dark, hidden places. A mouse’s nest is usually composed of scraps of cloth, paper, hair, and other odds and ends.

If you didn’t see where the mouse went, look for the nest.

Instead, track the mouse to its nest so you can catch it using a trap. Mice are pretty fast, and chasing them around the house usually isn’t the best way to catch them and remove them. If you saw a mouse running by out of the corner of your eye, see if you can figure out where it went.
