Pest control in Washington, IN

Pest season in Washington

NOAA's 1991–2020 climate normals for the WASHINGTON 1 W, IN station show an average temperature of 56.3°F, about 48 inches of precipitation a year spread over roughly 73 days with measurable rain or snow, 90 nights at or below freezing and 32 days reaching 90°F or more. Monthly averages are at or above 50°F for 7 months, so insect activity is concentrated in a clear warm season, while 90 freezing nights a year push mice and some insects to look for shelter indoors. Average temperatures are at or above 50°F from about April through October.

Moisture and pests

At about 48 inches a year, Washington is wet by national standards. Damp soil, gutters and crawl spaces favor subterranean termites, mosquitoes breeding in standing water, and moisture-loving pests such as cockroaches, silverfish and carpenter ants in water-damaged wood.

Homes and pest entry points

The median year built for housing in Washington is 1960, and about 73% of its 5,435 housing units were built before 1980. Homes from this era often have settled foundations, aging weatherstripping and wood trim that can let pests in, and many have crawl spaces or basements worth checking for moisture. About 71% of housing units are single-family detached homes and 12% are mobile homes, whose skirting and crawl spaces are common entry points for rodents and insects.

Services most relevant in Washington

• Termite Control56.3°F average temperature and 48 in of precipitation a year
• Rodent Controlabout 90 freezing nights a year push mice indoors
• Bed Bug Treatment45% of homes are rented, with more move-ins and used furniture
• Mosquito Control48 in of precipitation and 77°F in the warmest month
• Ant Controlabout 7 months a year average 50°F or more
• General Pest Controlone call when you are not sure what the pest is

Owners, landlords and tenants

About 55% of occupied homes in Washington are owner-occupied and 45% are rented. Homeowners, landlords and property managers can call to be connected; tenants should usually report pest problems to their landlord or property manager first, since leases and local rules often make treatment their responsibility.

Nearby places

Washington is in Daviess County. Places within about 30 miles include Jasper (22 mi), Vincennes (19 mi), Huntingburg (27 mi), Linton (26 mi) and Lawrenceville, IL (29 mi).

Sources: Census Bureau Vintage 2025 estimate (July 1, 2025) for population; American Community Survey 2020–2024 5-year (tables B25003, B25024, B25034, B25035); 2024 Gazetteer; NOAA NCEI U.S. Climate Normals 1991–2020 (annual and monthly).