Carpenter Ant Treatment on Long Island

You have carpenter ants in your Long Island home if you see large black ants indoors year-round, small piles of coarse sawdust-like frass along baseboards or below window frames, or hear a faint rustling inside walls at night. Wooded Suffolk County properties, shoreline homes in Nassau, and any house with a history of gutter overflow or deck flashing issues are the most common calls. Satellite nests often form in door and window frames, dishwasher voids, and around chimney flashing. Winged reproductives appearing indoors in spring are a strong signal that a mature colony is nesting inside the structure, not just visiting from outside.

Bobby Bugs treats carpenter ants on Long Island by locating the parent and satellite nests, injecting non-repellent product directly into affected voids, and treating the exterior perimeter to intercept foraging trails. Expect a free estimate first, then a 6-month written guarantee.

1. 1Free on-site inspection: identify affected wood, moisture sources, and likely nest locations.
2. 2Written estimate before any work begins.
3. 3Direct injection of non-repellent product into wall voids, window frames, and other identified nests.
4. 4Non-repellent exterior perimeter treatment to catch outbound and inbound foragers.
5. 5Moisture-source flagging so structural or roofing issues can be addressed by a contractor.
6. 6Written 6-month guarantee with return visits if activity resumes.

Most Long Island carpenter ant jobs show a sharp drop in indoor activity inside 2 weeks, with the parent colony collapsing over 4 to 8 weeks as foragers move product back into satellite nests. Mature multi-nest infestations in older wooded Suffolk homes sometimes need a follow-up visit inside the 6-month guarantee window. Moisture repair speeds recovery. Any bounce-back inside the guarantee is covered.

To keep carpenter ants out of a Long Island house, take away the damp wood they nest in and the bridges they use to reach it. Rutgers entomologists note carpenter ants prefer moist or decayed wood, so fix leaking pipes, roof drips and gutters, dry out the framing around bathrooms and under sliding doors, and replace rotted sills, porch posts, window frames and deck ledgers. Keep firewood off the ground and away from the house, get rid of stumps and dead limbs near the foundation, and cut back branches and shrubs that touch the siding or roof, because a parent colony in a tree sends satellite colonies into a house along those routes and can forage more than a hundred yards. Seal gaps where cables and pipes enter. A few big black ants indoors in winter or early spring, or piles of fine sawdust under a window or along a baseboard, mean a nest in the house, not a stray forager, and that's the point to call rather than spray, since spraying foragers leaves the nest untouched.

• Dix Hills

  Large wooded lots with stumps, woodpiles and mature trees within a few feet of every house.

• Melville

  Homes backing West Hills County Park and the Sweet Hollow Road woods.

• Commack

  Mature oaks and wooded buffers running through the postwar streets.

• Huntington

  North Shore canopy and older frame homes with original sills.

• Northport

  Victorian houses with cedar shingle and porch posts near the soil above the harbor.

• Rockville Centre

  1920s and 1930s Tudors with original wood sills and window frames on tree-lined blocks.

• Setauket

  Houses from the 1700s and 1800s with hand-hewn framing on fieldstone.

• Westbury

  1950s capes and splits where sixty years of weather has softened the deck ledgers and sill plates.

• Visit our full services list.
• See every area we serve across Nassau, Suffolk, Queens, and The Bronx.
• See our termite treatment page.
• See our carpenter bee treatment page.
• See our ant treatment page.
• Guide: Why Do Ants Keep Coming Back After You Spray?.

Carpenter ant treatment cost on Long Island depends on where the nest is and how much moisture-damaged wood it has found. A satellite nest in a damp Huntington deck rail is a focused job; a parent colony in a tree feeding satellite nests inside wall voids takes more inspection time, more material, and sometimes drilling to reach the voids. Homes with cedar shake, older sills, and shaded wooded lots, common in Smithtown and Garden City, tend to need more thorough treatment. Bobby Bugs gives you a free written quote before any work begins, and the number on the invoice matches the quote. Every carpenter ant treatment includes the 6-month written guarantee.