The short version
Around Cambridge, queens start nests in May, and colonies peak in late summer. Small, low paper wasp nests can be handled at dusk. Leave wall, ground and high nests to a pro.
- Treat nests at dusk, when wasps are home.
- Never seal a hole wasps are using.
- Ground and wall nests are best left to a pro.
- Knock down small nests early in spring.
- Call 911 for breathing trouble after a sting.
Homeowners and renters in Cambridge with a nest near a door, deck or play area.
What to look for
Near a door or deck, stings will happen. Wasps defend the area around their nest. Late-summer colonies are big and quick to sting.
- 1Wasps hovering at a mulch bed or retaining wall gap.
- 2Chewed, scarred wood on fences, decks or cedar siding.
- 3Yellowjackets crowding trash cans, soda cans and pet food.
- 4Buzzing audible through a ceiling or wall on warm afternoons.
- 5Yellowjackets streaming from the ground after mowing or trimming.
- 6Grey, papery football-shaped nest hanging in a tree or eave.
Why it’s worth acting soon
- Nests grow all summer.
- Ground nests get disturbed by mowing.
- Wall nests can chew through into rooms.
- Stings are dangerous for anyone allergic.
Treatment options and typical costs
Inspection and Nest Identification
$75–$200
Expect a pro to check eaves, vents, sheds and the ground. Multiple nests are common late in the season.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Ground and Wall-Void Nest Treatment
$150–$500
Foam and sprays rarely reach the back of a deep void. Pros use dust for hidden nests and sprays for open combs.
- Time
- 30–60 minutes plus a return visit
- Best for
- Yellowjackets in lawns, retaining walls, soffits and wall voids
Aerial Nest Treatment and Removal
$100–$400
Bald-faced hornet nests, the grey football-shaped ones, defend aggressively and are best left to a Cambridge professional with a bee suit and a long-reach applicator. Small paper wasp combs are a simpler job.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
Preventive Spring Treatment and Follow-Up
$150–$400
Follow-up matters after any treatment around a property. Checking again two weeks later catches anything the first visit missed.
- Time
- 45–90 minutes
- Best for
- Homes with repeat nests or a sting allergy in the household
Prices are typical published ranges. Ask what’s included before you compare quotes.
In cold-winter areas, old nests are empty by now. It's a good time to fix vent covers and siding gaps before queens go looking in spring.Which wasps live around Cambridge.
They're large, fly at night, and nest in hollow trees. European hornets live in Massachusetts too. Bald-faced hornets build big gray nests in trees and eaves. They cause most stings. Eastern yellowjackets nest in the ground and in wall voids. They build open, umbrella-shaped combs under eaves and railings. Paper wasps are the most common around Cambridge. They rarely sting. Mud daubers build tube-shaped mud nests.
Local wasps conditions in Cambridge.
An inspection in Cambridge usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Around Cambridge, the area is mostly urban, so wasps pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by. Cambridge sits in a humid continental climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October). A provider who works Cambridge and Massachusetts every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options. Knowing Cambridge's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote.
An unscreened foundation vent is an easy way in for a yellowjacket queen. Wasps flying in and out of a vent all day are a sign of a nest inside.When they’re most active.
Nests die back after the first hard freeze in fall. Early spring is the easiest time to remove small starts.
Where they nest around houses here.
Watch for traffic in and out of gaps. Check eaves, attic vents and window frames. Plenty of homes in Cambridge have basements, but most nests are higher up. Homes from Cambridge out to Somerville and Brookline share the same favorite nest spots. A ground nest looks like wasps streaming from one hole.
A year of wasps in Cambridge.
- Spring: queens start new nests around May. Knock down small starts. - Winter: lows near 22°F in Cambridge. Nests die; only queens survive. - Late summer: peak season. Workers hunt sweets near people. - Summer: highs near 82°F in Cambridge help colonies grow fast.
Wasp, hornet or bee?
- Paper wasp: slim, long legs, open comb. - Honey bee: fuzzy and golden. about relocation. - Mud dauber: thin waist, mud tube nests. Rarely stings. - Hornet: larger, with a big closed paper nest. - Yellowjacket: bright yellow and black, nests in the ground.
If you get stung.
If someone carries an epinephrine pen, use it. 911 for trouble breathing or a swollen face or throat. An antihistamine can ease itching and swelling. Wash the sting and use a cold pack. Move away from the nest first.
Keeping wasps away from the patio.
- Food: cover plates and drinks outdoors. - Gaps: seal gaps after a nest is gone. - Spring checks: knock down small nests early. - Fruit: pick up fallen fruit. - Trash: keep lids tight and bins away from doors.
Ground nests: what to do.
Pros treat ground nests at night, when the colony is home. Don't pour gasoline or water in. Don't mow over it. Keep kids and pets away. Mark the hole with a flag.
A nest, or just visitors?
A nest shows steady traffic to one spot. Wasps on flowers or trash cans may come from far away. Follow the line back to an eave, vent, shrub or hole. Watch at dusk, when they fly home.
Treating a small nest yourself, safely.
- Only if it’s small, low and out in the open. - Leave it overnight, then bag the nest. - Never spray from a ladder. - Use a jet wasp spray from several feet away. - Wear long sleeves, pants and gloves. - Wait until dusk, when wasps are home and slow. - Never if anyone in the house is allergic.
Wasps and pets.
Most stings just swell a little. Dogs often snap at wasps and get stung on the face. Keep pet food and water bowls indoors in late summer. your vet if the throat swells or breathing changes.
Kids and wasps.
Swatting makes a sting more likely. Teach kids to walk away calmly. Use cups with lids for sweet drinks outside. Check play sets, slides and playhouses for nests each spring.
After the nest is gone.
Seal the gap a wall nest used once it's quiet. Wasps don't reuse old nests. Knock down small new nests early next spring. Check nearby eaves for new starts.
Wasps at picnics and barbecues.
- Drinks: use cups with lids or straws. - Kids: teach them to walk away calmly. - Calm: don’t swat; slowly move away. - Trash: bag scraps and close the bin. - Food: keep it covered until you eat.
Ground nests in the lawn.
Watch for wasps flying in and out of the grass. Yellowjackets often nest in old rodent holes. Mark it, and keep mowers and kids away until it's treated.
Questions to ask before you sign.
- What kind of wasp is it? - Is a return visit included? - Is removal of the dead nest included? - How will you treat a nest inside the wall?
What affects the price
- Sealing gaps after the nest is dead.
- Preventive spring treatment bundled with removal.
- Colony size, which climbs sharply from June to September.
- Species: paper wasps cost least, hornets and yellowjackets more.
- Sting allergy in the home requiring extra precautions.
- Local labor rates and seasonal demand.
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What's your biggest concern about wasps?
When to call for help
They'll find another way in. Don't seal a hole wasps are using. right away if anyone in the house is allergic. Call for nests in walls, attics, the ground, or anywhere high.
What you can do yourself
Knock it down the next day. Big, high or hidden nests are a job for a pro. A small, reachable paper wasp nest is a fair DIY job. Spray it at dusk with a wasp aerosol.
Wasps in Cambridge
Winter lows near 22°F in Cambridge end the season; only new queens survive, tucked into sheltered spots. In denser parts of Cambridge, nests turn up in eaves, balconies, signs and wall gaps. With summer highs near 82°F in Cambridge, colonies grow fast and are biggest by August.
Local research
Wasps in Cambridge, MA: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Massachusetts, when they are busiest around Cambridge, and what the state figures look like. Everything below links to the agency or university page it came from.
First North American report of the European paper wasp
Massachusetts is where this now-nationwide eave-nesting wasp arrived.
Penn State ExtensionWasp species recorded in Massachusetts
- German yellowjacket (Vespula germanica) — UC IPM: 'becoming more common in many urban areas of California, where it frequently nests in houses.' Named among Ohio's three main species (German, Eastern, Common yellowjacke…
- Bald-faced hornet (Dolichovespula maculata) — Penn State: 'found in most of the 48 contiguous states and D.C., throughout Canada and in Alaska'; actually an aerial yellowjacket that builds the football-shaped gray paper nes…
- European hornet (Vespa crabro) — Penn State: 'first detected in the 1840s', 'well established in the eastern United States', 'first reported from Arkansas in 1999'; workers 'up to an inch (25 mm) long', nests '…
- European paper wasp (Polistes dominula) — Penn State: 'first reported in 1978 around Boston', now 'coast to coast ... although they are apparently less common in the Southeast and Great Plains'; nests in 'eaves of struc…
When wasps are busiest around Cambridge
Queens emerge in April–May, colonies peak August–October, and workers die at the first hard frosts; only new queens overwinter (OSU, Penn State, UMN).
Penn State: European paper wasps were 'first reported in 1978 around Boston' and have spread coast to coast. Bald-faced hornet range per Penn State covers most of the 48 contiguous states and D.C. European hornet is established across the eastern United States (Penn State).
Rules that apply in Massachusetts
For context, nationally
- 788 — Deaths from hornet, wasp, and bee stings, 2011–2021 (US). CDC MMWR
- 72 deaths per year — Average annual sting deaths, 2011–2021 (US). CDC MMWR
Sources: European Paper Wasp; CDC MMWR; Yellowjackets and Other Social Wasps (Pest Notes); Baldfaced Hornet; European Hornet. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wasps away
- Trim shrubs so nests cannot hide near walkways.
- Cover drinks outdoors and use lidded cups for kids.
- Repair torn window screens and door sweeps.
- Pick up fallen fruit under trees promptly.
- Move hummingbird feeders away from doors and patios.
- Mow at dawn when ground-nesting wasps are sluggish.
A good wasp quote names the species, where the nest is, how it will be treated and whether taking it down or sealing the gap is included.Did you know?
Mud daubers stock their nests with paralyzed spiders
A bald-faced hornet is actually a yellowjacket, not a true hornet
Questions people ask
Will wasps come back to the same nest next year?
They don't reuse old nests. New queens often pick the same sheltered spots, though.
Why are there suddenly so many wasps in late summer?
Colonies are at their biggest by late summer. Food gets scarce, so workers hunt sweets and protein near people.
Wasp or bee: does it matter?
Bees are fuzzy and rounder. It matters because honey bees can often be relocated. Wasps are smooth and narrow-waisted.
How do I find a good wasp control company?
Check that they're licensed in Massachusetts. Ask how they treat hidden nests and whether removal is included.
How long does wasp nest removal take?
Usually under an hour. Hidden nests may need a second visit a few days later.
Are wasps considered an under-controlled pest?
Often, yes. Around Cambridge, many nests go unnoticed until late summer, when colonies are biggest and most defensive.
What stops people from dealing with wasp nests?
Around Cambridge, fear of stings, nests that are hard to reach, and not noticing them until they're big.
When is wasp season in Cambridge?
Around Cambridge, queens start nests in May, and colonies peak in late summer. Nests die back after the first hard freeze in fall.
Are hornets common in Cambridge?
Bald-faced hornets are, in trees and on eaves.
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Sources (9)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Wasp Exterminator · Updated September 11, 2026 · How we write these guides