Spotted Lanternfly Treatment on Long Island

You have spotted lanternflies on your Long Island property if you see gray-and-red winged insects clustered on tree trunks, decks, siding, and grape vines in late summer, gray-brown mud-like egg masses on tree bark and outdoor furniture in fall, or sticky honeydew and black sooty mold on cars, patios, and decking. Tree of heaven, silver maple, walnut, and grape are their favorite hosts. Suffolk County vineyards and Nassau County suburban yards with mature hardwoods are both seeing heavy pressure. Populations often surge two to three years after arrival, which puts Long Island in a serious activity window right now.

Bobby Bugs treats spotted lanternflies on Long Island with a seasonal program targeting host trees during nymph and early adult stages, plus perimeter work on siding and decks where adults cluster. Expect a walk of the property, a specific tree-by-tree plan, and a treatment window matched to the life cycle.

1. 1On-site walk to identify tree of heaven, silver maple, and other primary host trees.
2. 2Nymph-stage treatment on trunks and lower foliage where possible.
3. 3Adult-stage perimeter work on siding, decks, and outdoor furniture zones.
4. 4Egg-mass scraping guidance for fall and winter follow-up.
5. 5Return visits during the season depending on infestation size and program.

You will see a sharp reduction in lanternfly clusters on treated trees within 3 to 7 days, and a meaningful drop in adults on decks and siding across the season. Because eggs laid in fall will hatch the following spring on and near the property regardless of this year's treatment, reduction is measured season over season, not day over day. Multi-year programs deliver the biggest cumulative drop.

Nassau, Suffolk, Queens and the Bronx are all counties where the spotted lanternfly is established, so New York State's instruction if you see one is simple: kill it. From September through June, look for the egg masses, flat gray-brown smears about an inch long on tree trunks, fences, patio furniture, cars and siding, and scrape them into a jar of rubbing alcohol or hand sanitizer; Penn State notes each destroyed mass removes about 35 lanternflies from next year's crop. If you have tree of heaven on the property, the lanternfly's favorite host, have it removed, roots and all, or it will keep drawing them in. For nymphs climbing trunks in spring and summer, Penn State recommends circle traps over sticky bands, which catch birds, squirrels and pollinators unless screened. Lanternflies can't bite or sting and don't damage the house itself, but they excrete honeydew that grows sooty mold on decks, patios, cars and everything under an infested tree, and those stains are hard to remove. Treating large trees takes systemic products and equipment that Penn State says are best left to a certified applicator, which is what we do.

• Hempstead

  Tree of heaven along the rail line and the older commercial blocks.

• Freeport

  Tree of heaven in the alleys and lots behind the commercial strips.

• Huntington Station

  Rail corridor and Route 110 edges where tree of heaven grows wild.

• Brentwood

  Industrial edges and rail line where the host tree spreads.

• Mineola

  The rail corridor and the street trees downtown.

• Valley Stream

  The Queens line, with tree of heaven along Sunrise Highway and the rail line.

• Bay Shore

  Maples and tree of heaven along Montauk Highway and the station.

• Patchogue

  Downtown plantings and the rail corridor.

• Visit our full services list.
• See every area we serve across Nassau, Suffolk, Queens, and The Bronx.
• See our general insect treatment page.
• See our tick control page.
• Guide: How to Get Rid of Spotted Lanternflies on Long Island.

Spotted lanternfly treatment cost on Long Island depends on how many trees are hosting them and how large the property is. A single infested maple at a Queens driveway is a quick visit; a wooded Suffolk lot with tree-of-heaven stands needs a seasonal program with repeat applications from summer into fall, which is when adults cluster before laying eggs. Tree height and access matter too, since tall host trees need different equipment than shrubs and vines. Bobby Bugs gives you a free written quote before any work begins, and the number on the invoice matches the quote. Every spotted lanternfly program includes a seasonal guarantee in writing.