Pest Control in Hastings, Minnesota

A town built on water power, and what that left behind

The Dakota County Historical Society notes that the Vermillion River takes its name from red clay banks and that it crosses the county before descending in falls and rapids to the Mississippi. Its water once powered three Hastings flour mills at the end of what the Society calls the “Pioneer Wheat Trail,” and a mill at the falls produced the first saleable graham flour in the state. The city’s visitor bureau describes early Hastings as a shipping and milling center at the junction of the St. Croix and Mississippi, with a deep-water harbor where steamboats could unload goods and passengers.

That history is still visible in the housing stock. In the Census Bureau’s American Community Survey for 2020–2024, Hastings has about 9,302 housing units. Roughly 806 of them, close to 9 percent, were built in 1939 or earlier, and about 2,793 units, or 30 percent, went up before 1970. Around three in four occupied homes are owner-occupied. For pest work, age matters more than address: older foundations, balloon-framed walls, settled sills and original attic vents all give mice, boxelder bugs and moisture-loving insects more ways in than a newer house has.

The city takes that older stock seriously. The Hastings Heritage Preservation Commission runs a Century Home Program that recognizes residential properties with historical or architectural significance, and owners can choose to display a plaque. For an owner of one of those homes, the practical point is that exclusion work (sealing gaps, screening vents, replacing rotted trim) should respect the original materials. It is reasonable to ask the licensed company how it plans to seal an opening before it starts.

Downtown: thirty-five brick storefronts and shared walls

According to the Dakota County Historical Society, the East Second Street Commercial Historic District holds thirty-five commercial buildings built between 1860 and 1900. Unlike many towns that cleared their downtowns during post-war urban renewal, Hastings kept most of its downtown intact. The visitor bureau counts nearly fifty historic buildings along East Second Street, the city’s main street, being adapted for modern shops and tenants, and it notes that the 1871 Dakota County Courthouse was rehabilitated in 1993 to serve as Hastings City Hall.

Buildings that old, standing wall to wall, share basements, utility chases and roof lines. An insect or rodent problem in a restaurant kitchen can become the neighbor’s problem through a common wall. University of Minnesota Extension says cockroaches hide by day and come out at night, that they can be major pests in restaurants, warehouses, offices and any building with food-handling areas, and that hiring a pest management service is the recommended route for treating them. Extension also notes that only a small share of the cockroaches in a building are ever seen, and that corrugated cardboard boxes are a common way infestations arrive. For a downtown business, that makes deliveries and stored boxes worth watching, and it makes it worthwhile to coordinate with the building owner so adjoining units are inspected together.

Three rivers, one lock, and a lot of floodplain

Friends of the Mississippi River describes the St. Croix confluence with the Mississippi as lying near Hastings, and notes that the Vermillion has its own confluence near the city too. Just upstream sits Lock and Dam 2. The U.S. Army Corps of Engineers, St. Paul District, lists it at Mississippi River mile 815.2, upstream of Hastings. It was built in 1930, and when the original lock walls settled and tilted, a second lock was finished in 1948. The site went through major rehabilitation from 1987 to 1995. The dam is a 722-foot concrete structure with 19 Tainter gates and a 3,000-foot earth embankment, and its 4.4-megawatt power plant is owned and operated by the City of Hastings. The lock chamber is 110 feet wide and 600 feet long.

For mosquitoes, the navigation channel matters less than the floodplain around it. A natural resource management plan prepared for the city by Friends of the Mississippi River notes that Gores Pool Wildlife Management Area and the Vermillion River Bottoms, downstream of town, hold one of the largest expanses of floodplain forest in southeastern Minnesota. The Metropolitan Mosquito Control District says its most common summer species, the floodwater mosquito Aedes vexans, lays eggs on moist soil at the edges of ponds, swamps and other wetlands. Rain or rising water washes the eggs in, the larvae develop for five to seven days, and the adults can fly more than 20 miles from where they hatched. When river levels rise in a wet spring, the bottomlands can send mosquitoes well into town.

The Vermillion gorge and wooded lots

Vermillion Falls Park is a city-owned park of about 25 acres on the east side of Highway 61, and the same management plan says it has been a city park since the late 1960s. The plan describes it as mostly oak forest now, with common buckthorn and non-native earthworms well established. It is linked to Vermillion Linear Park upstream and to Old Mill Park downstream, where the ruins of the old mill stand, and it sits about 1.5 miles from the Mississippi. The same plan places Hastings Sand Coulee Scientific and Natural Area, a sand prairie site the DNR manages, about a mile south of the falls.

Houses that back onto the gorge or onto other wooded ravines deal with a different mix than houses downtown. Extension describes carpenter ants as very common in Minnesota and able to damage homes and other wooden structures. Because controlling them means finding and treating the nest, Extension recommends a pest management professional. Extension also notes that termites are very uncommon in Minnesota, so a winged insect indoors in spring is much more likely to be a carpenter ant, and it is worth having it identified before paying for any termite work.

Fall invaders on south- and west-facing walls

Every autumn some Hastings homeowners find insects clustered on sunny siding. Extension says boxelder bugs are drawn to buildings with a lot of southern or western exposure, that they generally do not damage property but can stain surfaces, and that they are most abundant after a warm spring followed by a hot, dry summer. The window for control is fall, by sealing openings and timing any insecticide use; once they are inside, Extension says physical removal is the only practical control. Older brick and frame buildings with loose window trim and weathered mortar joints give them more ways in, which is one more reason a Hastings exclusion visit often starts with the walls rather than the yard.

Which public office handles what in Hastings

The Metropolitan Mosquito Control District was created in 1958 and serves seven metro counties, including Dakota County, where its Rosemount facility covers the area. It controls mosquito larvae in wetlands, does not spray individual private yards unless there is a mosquito-borne disease threat, and asks residents to call (651) 645-9149 to have a nearby wetland checked. The District also runs a black fly (biting gnat) program. It says black fly larvae develop in running water, small-stream work began in 1984, full-scale large-river treatment started in 1996, and the Minnesota DNR decides what control is done on large rivers. A homeowner cannot hire anyone to treat the Mississippi or Vermillion.

Property conditions fall to the city. The Hastings Property Maintenance and Code Enforcement page lists grass and weeds over 12 inches as excessive, with owners usually given seven days to fix it before a ticket. It prohibits leaving tree trimmings, building materials, tires and other junk in the yard. It also flags unmaintained or unsecured swimming pools, noting that stagnant water contributes to mosquito problems. Code Enforcement can be reached at 651-480-2376. A licensed company can treat a yard and a structure, but it cannot fix a neighbor’s abandoned pool, which is a matter for the city.

ZIP codes served

Hastings City Hall on Fourth Street East and Lock and Dam 2 on Lock and Dam Road both use ZIP code 55033. Calls from the surrounding townships and nearby parts of Dakota County are routed to licensed companies that serve those addresses.

Verifying that a Hastings exterminator is actually licensed

In Minnesota, anyone applying pesticide commercially in or around buildings needs a structural pest control license from the Minnesota Department of Agriculture. The MDA licenses at three levels: Company, Master and Journeyman. Applicators must work for a licensed company. Each company must employ at least one licensed Master, carry workers’ compensation and meet the state’s financial responsibility rules. A Journeyman needs two years of licensed experience before applying to become a Master, and licenses expire on December 31.

Lawn and yard spraying for mosquitoes and ticks is a separate license. MMCD directs residents to the MDA license lookup under the category Commercial Pesticide Applicator – Mosquitoes, Black Flies, and Ticks. Before any treatment on a Hastings property, get the company name and the name of the applicator who will be on site, then look up both. Exterminator Dispatch expects every company it routes to hold the correct Minnesota license for the job, and the lookup takes about two minutes.