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Des Plaines has ant pressure from every direction — the Des Plaines River corridor harbors carpenter ant colonies in mature trees along its banks, the adjacent forest preserves support dense ant populations, and the city’s post-war housing stock provides easy entry points. Whether you’re finding large black carpenter ants near a bathroom window or tiny ants trailing across the kitchen counter, the problem traces back to a hidden colony that store-bought products can’t reach.
Quick Kill Exterminating has been eliminating ant colonies in Des Plaines since 1990. We target the colony — including the queen — so the problem doesn’t keep coming back season after season.
The most destructive ant species in Des Plaines. Large black ants (1/4 to 1/2 inch) that tunnel through wood to build nesting galleries. A mature colony of up to 10,000 ants causes real structural damage over time. They don’t eat wood — they excavate it, leaving coarse sawdust (“frass”) near nest openings.
The Des Plaines River corridor is ground zero for carpenter ants in the city. Mature trees lining the river and the adjacent forest preserves harbor parent colonies in dead limbs, hollow trunks, and stumps. From these outdoor nests, carpenter ants establish satellite colonies inside homes — targeting areas where wood has become damp around windows, rooflines, bathrooms, and chimneys. Homes in neighborhoods near the river and forest preserve edges see the highest carpenter ant activity.
Signs of carpenter ants:
Small (1/8 inch), dark brown to black ants that nest in driveway cracks, sidewalks, patios, and foundations. They leave small sand mounds and forage indoors for sweets and grease. Extremely common across every Des Plaines neighborhood.
Small (1/16 to 1/8 inch) ants that smell like rotten coconut when crushed. Massive colonies with multiple queens invade kitchens and bathrooms. Store-bought sprays trigger “budding” — the colony splits and spreads through your home.
Tiny (1/16 inch), dark black ants that trail along countertops, windowsills, and floors. Nest in wall voids and woodwork. Most active in summer.
You’re only killing foragers. The visible ants are 10-15% of the colony. The queen is hidden in the nest.
Repellent sprays backfire. Store-bought products cause ants to reroute or trigger colony budding, spreading the problem.
The parent colony is usually outdoors. Along the Des Plaines River, in forest preserve trees, or in mature trees on your property. Indoor nests keep getting repopulated until the source is addressed.
Des Plaines has constant ant pressure. The river corridor, forest preserves, and parks support dense ant populations year after year.
We inspect inside and out — identifying the species, locating nesting sites, mapping foraging trails, and finding entry points.
For carpenter ants, we treat wall voids and nesting areas directly, apply non-repellent products along foraging trails and entry points, and address outdoor nesting sites. For smaller species, we use baits and non-repellent treatments for maximum colony exposure.
We treat the foundation perimeter, utility entry points, window and door frames, weep holes, and exterior nesting sites.
We confirm elimination and set up ongoing prevention. Quarterly maintenance adjusts for seasonal peaks in spring and summer.
March – April: Carpenter ants emerge. Swarmers appear indoors — often mistaken for termites.
May – June: All species peak. Pavement ant mounds in driveways. Kitchen invasions accelerate.
July – August: Peak season. Maximum populations and foraging.
September – October: Activity declines but carpenter ants stay active until hard freeze.
November – February: Outdoor activity stops, but interior carpenter ant nests remain active year-round.
They cause structural damage over time but work more slowly. Termites are rare in Des Plaines — large winged insects indoors in spring are almost certainly carpenter ant swarmers.
The river corridor and forest preserves continuously produce new colonies. Quarterly maintenance prevents recolonization.
Yes. EPA-registered products applied in targeted areas — not broadcast across living spaces.
Depends on species, infestation extent, and home size. Free quote — call (847) 724-1511.
Quick Kill Exterminating Co. has been solving ant problems for Des Plaines families since 1990. We’re your local Des Plaines pest control experts — based in nearby Wheeling and in your community every day.
Other Des Plaines pest control services: Mouse & Rodent Control · Mosquito Control · General Pest Control