Mosquitoes in New Hampshire
Everything a New Hampshire homeowner needs — identify it, weigh the risk, keep it out, treat it, and know exactly when to call a licensed local pro.
The 5-stage path
Mosquitoes, start to solved
Every guide below sits on one journey. Follow it end to end, or jump to the stage you’re on — the most-read answer in each stage is highlighted.
Identify
30 guidesWhat is this bug, smell, or plant damage?
+24 more identify guidesIs Mosquito Fogging Safe for Pets?Top pickFor dogs and humans, yes — once dry. For cats, fish, and bees, no without precautions: 10.5% of feline permethrin cases were fatal. How to protect every pet.
Eastern Equine Encephalitis (EEE) in New HampshireEEE killed a NH resident in 2024 (2 human cases, 1 death). Learn about the ~30% fatality rate, which NH counties face the highest risk, and what protection actually works against this rare but deadly disease.
How to Find a Mosquito in Your RoomTurn off the lights, wait 60–120 seconds, then sweep a flashlight along the wall. 85% of mosquitoes rest within 8 inches of the floor. 4 techniques to find it.
How to Get Rid of Mosquitoes in Your BackyardThe CDC-ranked way to clear backyard mosquitoes in NH: eliminate standing water first, then repellents, fans (cut landings ~75%), Bti, and pro treatment.
How Long Does Mosquito Spray Last?Professional mosquito spray lasts about 21 days under good conditions, delivering 70-90% Aedes reduction. Rain shortens the window. Here's what peer-reviewed data says.
How Do Mosquitoes Get in the House?Mosquitoes enter homes through 10 ranked entry points — from open doors to fieldstone foundation gaps. Here's the full NH home entry audit with product picks.
then
Prevent
3 guidesWhat attracts it, and how do I keep it out?
When Is Mosquito Season in NH? Timing & Risk GuideTop pickMosquito season in NH runs April through October, with EEE/West Nile risk peaking August until the first hard frost (~Oct 19). See the month-by-month guide.
Where Do Mosquitoes Go In The Winter?The mosquitoes biting you are already gone for the season. But their eggs and diapausing females overwinter — spring source reduction is what actually matters.
What Attracts Mosquitoes to Your House?Standing water is what makes mosquitoes near your house; your breath, warmth, and skin chemistry are what makes them bite you — two different answers.
Done reading about mosquitoes?
Let a licensed pro
end the mosquitoes.
Anchor Pest Services has cleared mosquitoes from Southern New Hampshire homes since 2017. Treated by Daniel Brady, NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430). No pushy contracts — just a straight answer and a free quote.
- NH-licensed applicator
- Same-day service
- Pet & family-conscious
NH License #782664 · No obligation · We answer in person