Here are some common signs that you may have a rodent problem. You See Rodent Droppings . This is one of the most reliable signs that you have a rodent problem. Because mice like to run in places that offer them some protection from predators, you may find droppings in cupboards or under the sink, along walls, or on top of wall studs or beams. Storage rooms, sheds, barns, or cabins loaded with boxes, bags, old furniture, and other objects make an ideal home for rodents, so you may find droppings there, even inside boxes and other containers.
Workplaces can also make good rodent homes.
Warehouses, restaurants, and the like are obvious places to look because food may be plentiful there. However, rodents can infest office buildings, too. Once again, look for droppings in protected places, such as closets, storage rooms, or inside boxes. You See Signs of Rodent Nests. Rodents tend to build their nests from materials that are soft, fuzzy, or warm.