Winter Tick Control: Why One Warm Day Brings Ticks Back Out

Back in January 2023, our phones started doing something January phones are not supposed to do: ringing about ticks. Clients across Massachusetts and Rhode Island were finding them on dogs, on pant legs, on themselves — in the middle of what the calendar said was the dead of winter. It was not a fluke: that month turned out to be the warmest January ever recorded in both states. We put a route together to handle the calls, and by the next season, winter tick control was a standing program.

Source: NOAA — January 2023 was nation’s 6th warmest on record

I run our Raleigh operation, where mild winter days are the rule rather than the exception, so this subject sits close to home. Here is what those January calls taught us, what the weather record shows, and how the winter program actually works.

The Myth: “Ticks Die When It Gets Cold”

They do not. Freezing temperatures do not kill adult blacklegged (deer) ticks — the ticks that carry Lyme disease. Cold pauses them. A tick sitting on frozen ground cannot muster the energy to move, and snow cover pins them down — but underneath, in the leaf litter, they are alive and waiting.

Source: URI TickEncounter — Winter Tick Activity

The switch that turns them back on is simple: ground thawed, air above freezing. That is the whole formula. Any winter day that clears it, adult deer ticks can climb back onto the brush and quest — the tick word for sitting legs-out, waiting for something warm-blooded to pass. They spent the fall doing exactly that in big numbers, aiming mainly for deer but taking people and pets when we walk through.

Source: URI TickEncounter — Fall Tick Alert

So the question for a New England winter is never whether the ticks survived. It is how many working days the weather hands them.

What Rhode Island Winters Actually Do

We pulled the record, and it makes the case better than we could. That January the phones rang? NOAA logged January 2023 as the warmest January on record in Rhode Island, Massachusetts, Connecticut, New Hampshire, Vermont, Maine, and New Jersey — the whole region at once. Week after week of thawed ground and above-freezing afternoons, in the month that is supposed to be the coldest of the year. The ticks took the invitation, and our clients met them.

Source: NOAA — January 2023 national climate ranking

Then look at what just happened: the winter of 2025–26 swung all the way to the other pole — the coldest and snowiest New England winter since 2014–15, with Providence recording its snowiest winter ever. Almost no tick days at all.

Source: WBUR — How harsh was this winter? Here’s what the data says

Record warmth and record snow, three winters apart. That swing is the honest picture of a New England winter now: in October, you cannot know which one you are getting. Some winters hand ticks a dozen working days a month; some bury them until March. A program built for that reality has to flex with the weather — which is exactly how ours is built.

Warm Spells Are Tick Weather: November, February, March

Cold-season warm spells are not rare, and they cluster at the edges of winter. November regularly runs mild before the real cold arrives. February and March produce the classic thaw: a run of days in the 40s, snow pulling back from the wood line, ground going soft. December and January are usually the coldest, quietest stretch — but as 2023 proved, even January makes no promises.

Picture what a thaw day looks like at your place. The dog has been cooped up and finally gets a real walk. The kids get outside. You haul a trash bag past the leaf pile that never got raked in the fall. Every one of those small trips crosses tick habitat on the one kind of day the ticks are working. For the full month-by-month picture of when ticks are active, our tick season guide for Massachusetts walks the whole calendar.

Pets Carry the Winter Risk Home

Most of the winter tick concern we hear starts with a dog — and that is the right instinct. Dogs work the exact ground ticks wake up in: nose down along the wood line, through the leaf litter, under the brush at the fence. On a thaw day, a winter walk is a tick-collecting route, and a tick that rides home on a dog does not always stay on the dog.

The veterinary world is unambiguous here. The Companion Animal Parasite Council recommends that dogs stay on tick control year-round, for life — not seasonally — because seasonal-only protection tends to lapse while ticks are still active, and because untreated pets carry ticks into homes, where people meet them.

Source: Companion Animal Parasite Council — Tick Guidelines

Our part of the answer is the yard itself: fewer ticks waiting in the leaf litter means fewer ticks on the dog, whatever the month. Keep the protection your veterinarian recommends running, keep up the tick checks after thaw-day walks — ears, collar line, armpits, between the toes — and if you do find one attached, our Lyme disease prevention guide covers removal and the steps after. Let the treatments handle the habitat.

The View from the Triangle

Now for my market. Around the Raleigh Triangle, the winter tick question is barely a question — a Carolina winter spends most of its days above freezing, and the ground rarely stays frozen long. The off-switch that New England cold flips for weeks at a time hardly gets flipped here. Deer move through the greenway corridors and wooded lot lines all winter, dogs walk every day, and ticks get workable weather most weeks of the season.

That is why winter coverage is not a lighter version of the program down here — it is the same program with more days that matter. If anything, the Triangle is the proof of the whole idea: winter tick control is just tick control that matches the weather you actually get.

How the Winter Program Actually Works

The winter program runs on three rules, and every one of them came out of that first winter of routes.

Visits about every six weeks. Through the off-season we schedule up to three treatments, roughly six weeks apart — enough to keep the habitat hostile through the months when warm days come in bursts. Technicians treat the same ground as in-season tick control: the perimeter and the whole property, with particular attention to where ticks overwinter — leaf litter, mulch beds, ground cover, and the wood-line edges deer travel.

We only spray when it is needed. The program is weather-gated. If a stretch is genuinely too cold for a treatment to do any good, we do not run the route and pretend otherwise — we hold off until conditions call for it.

Skipped treatments are never lost. If winter stays cold enough that some of your treatments never make sense to run, they bump into your regular season instead. Either way the visits are yours — the cold just decides when they happen.

Both treatment lines run through winter: the traditional program, or the all-natural option built on citronella, peppermint, and cinnamon oils. The program is available across our Massachusetts, Rhode Island, and North Carolina service areas — the full picture is on the winter tick control page.

By the Way: There Is Also an Animal Called the “Winter Tick”

One clarification worth making, because the name collides. There is an actual tick species commonly called the winter tick (Dermacentor albipictus), and it lives differently from every tick discussed above: it is a one-host tick, meaning the larva, the nymph, and the adult all feed on the same individual animal, riding it from fall straight through winter. Its world is large animals — deer, moose, elk, horses, and occasionally a dog that pushes through the brush where its larvae cluster in fall.

Source: University of Maine Cooperative Extension Tick Lab — Winter Tick · Source: Texas A&M University — The Tick App — Winter Tick

It is a different creature from the deer ticks this article is about — but it favors the same ground we treat: the brushy edges, tall grass, and leaf litter where deer traffic runs.

A Homeowner’s Winter Tick Checklist

• Clear the leaf litter. It is winter housing. Rake it out of fence lines, foundation beds, and the lawn edge instead of letting it mat down.
• Keep the wood line cut back. Short grass and trimmed brush give questing ticks fewer perches and deer less cover.
• Tick-check the dog after thaw-day walks. Ears, collar line, armpits, between the toes — and keep the year-round prevention your veterinarian recommends.
• Treat the habitat. Schedule the off-season visits so the next warm spell finds less waiting to wake up.

Source: Penn State Extension — winter tick habitat management

Related Reading

• Tick Season in Massachusetts — the month-by-month activity calendar and how professional tick control is timed.
• How to Prevent Ticks: A Homeowner’s Guide to Lyme Disease Prevention — the deer-tick playbook: yard checklist, repellents, and what to do after a bite.
• Where Do Mosquitoes Go in Winter? — what the cold months mean on the mosquito side.

One warm day is all it takes.

Mosquito Mike provides winter tick control across Massachusetts, Rhode Island, and the Raleigh Triangle, with traditional and all-natural programs. Get your instant quote.