Two kinds of mice cause most indoor activity in Ohio. The Mammals of Ohio field guide describes the house mouse as a nonnative species that usually lives in buildings, in close association with people. The white-footed mouse is a common native mouse of woody and brushy areas that often enters buildings. Both are active at night.
Around Columbus, homes range from older houses with settled foundations and brick weep vents to new builds with fresh utility runs and garage doors. Each kind of home has small gaps, and landscaping that runs from wooded areas right up to the foundation gives mice cover on the way in.
Mice also breed quickly. House mice have several litters a year after a pregnancy of only 18 to 21 days, with up to 11 young in a litter. A few mice that get in this fall can become a much larger problem by spring.
For your home, that means we confirm which mouse is involved, trace every connected opening and pair the removal with the sealing and cleanup the space needs.