The New England Pest Calendar: What to Watch for Every Season

Pest control in New England is a calendar business. Every wave that hits your house is predictable to within a few weeks — which means every wave can be met before it lands, usually for less money than cleaning up after it. Here's the year as we see it from the truck.

March–May: swarm season

The first warm week of spring wakes everything up at once. Carpenter ant colonies send out winged swarmers — if they emerge inside your house, the nest is inside your structure, and that's a call-now situation, not a watch-it situation. Wasp queens — every one of them a complete future colony — scout eaves and deck rails for nest sites. A spring eave treatment intercepts colonies at their cheapest possible moment: population of one.

May–July: the tick window that matters most

Nymph-stage blacklegged ticks — poppy-seed sized, nearly impossible to spot feeding — cause the majority of Lyme disease transmission, and they peak May through July. This is the window where yard treatment earns its keep: barrier applications along woodlines, stone walls, and shade edges before Memorial Day cut the population your kids and dog walk through all summer. On the Cape, add lone star ticks to the list; their range grows every year.

July–September: peak everything

High summer is maximum pressure: ant trails at their heaviest, mosquitoes breeding in every forgotten water-holding object, spider webs rebuilding overnight as the flying-insect buffet peaks, and yellow jacket colonies hitting maximum size and maximum attitude in exactly the weeks you're grilling next to them. Late-summer stings spike for a reason: a colony you didn't notice in June has four thousand residents by Labor Day.

September–November: the fall push

The first cold nights flip a switch in every mouse within scent distance of your foundation. The fall rodent push is the most predictable event on this calendar — and the most preventable. Exclusion work (sealing the gaps, screening the vents, sweeping the garage door) done in September is worth three baiting programs in December. Meanwhile stink bugs and boxelder bugs gather on sunny walls, looking for winter quarters in your wall voids.

December–February: the quiet season (mostly)

Winter concentrates whatever got inside. Mice that made it in are now breeding near your warmth and food; interior activity that was a scratch in October is a family by February. Warm winter days bring confused stink bugs out of the walls. It's also the smartest season for the planning work: inspections, quotes, and getting a program in place before the March wake-up.

The one-decision version

If tracking a calendar isn't how you want to spend a year: that's literally what a recurring plan is — each visit timed to arrive just ahead of the next wave. But whether you hire us or not, put two dates in your phone: tick treatment by early May and mouse-proofing by mid-September. Those two beat everything else on cost-per-headache-avoided.