The short version
Around Waltham, 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 Waltham with a nest near a door, deck or play area.
What to look for
Late-summer colonies are big and quick to sting. Near a door or deck, stings will happen. Wasps defend the area around their nest.
- 1Multiple stings on one person during a single outdoor task.
- 2Wasps flying straight lines to and from one spot.
- 3Wasps entering an attic vent, dryer vent or weep hole.
- 4Wasps appearing indoors near light fixtures or windows.
- 5Wasps disappearing into a hole in the lawn or a wall.
- 6Open umbrella-shaped comb under a porch ceiling or railing.
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
Nest location drives everything else in Waltham: height, whether it sits in a void, and how close it is to doors or play areas. The inspection should end with a plan and a price.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Preventive Spring Treatment and Follow-Up
$150–$400
Follow-up matters after any treatment around a property. A second look two weeks later catches missed nests.
- Time
- 45–90 minutes
- Best for
- Sting allergies or repeat nest spots
Ground and Wall-Void Nest Treatment
$150–$500
Yellowjackets nesting in Waltham lawns, retaining walls and old rodent burrows are treated by applying insecticidal dust directly into the entrance hole. Dust carries deep into the chambers as workers walk through it.
- Time
- 30–60 minutes plus a return visit
- Best for
- Yellowjackets in lawns, retaining walls, soffits and wall voids
Sealing Up After the Nest Is Dead
$150–$450
Sealing work targets the places wasps favor in Waltham: soffit seams, attic and dryer vents, gaps around utility lines and loose fascia boards. Vent screens and sealant handle most of it.
- Time
- 1–2 hours
- Best for
- Sealing the gap once the nest is dead
Prices are typical published ranges. Ask what’s included before you compare quotes.
Yellowjackets often nest in old rodent holes and gaps in garden walls. Watch for wasps flying low and steady into one spot.Which wasps live around Waltham.
They build open, umbrella-shaped combs under eaves and railings. Eastern yellowjackets nest in the ground and in wall voids. They cause most stings. Bald-faced hornets build big gray nests in trees and eaves. European hornets live in Massachusetts too. They're large, fly at night, and nest in hollow trees. Mud daubers build tube-shaped mud nests. They rarely sting. Paper wasps are the most common around Waltham.
Local wasps conditions in Waltham.
Across Waltham, 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. An inspection in Waltham usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Waltham'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. A provider who works Waltham 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. Waltham sits in a humid continental climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October).
Yellowjackets sometimes nest in attics and wall voids, getting in through a torn vent screen or a gap in the soffit. Buzzing in a ceiling is worth a look.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.
Check eaves, attic vents and window frames. Watch for traffic in and out of gaps. A ground nest looks like wasps streaming from one hole. Homes from Waltham out to Newton and Brookline share the same favorite nest spots. Plenty of homes in Waltham have basements, but most nests are higher up.
A year of wasps in Waltham.
- Winter: lows near 19°F in Waltham. Nests die; only queens survive. - Spring: queens start new nests around May. Knock down small starts. - Summer: highs near 83°F in Waltham help colonies grow fast. - Late summer: peak season. Workers hunt sweets near people.
Wasp, hornet or bee?
- Honey bee: fuzzy and golden. about relocation. - Paper wasp: slim, long legs, open comb. - Yellowjacket: bright yellow and black, nests in the ground. - Hornet: larger, with a big closed paper nest. - Mud dauber: thin waist, mud tube nests. Rarely stings.
If you get stung.
Wash the sting and use a cold pack. An antihistamine can ease itching and swelling. 911 for trouble breathing or a swollen face or throat. If someone carries an epinephrine pen, use it. Move away from the nest first.
Keeping wasps away from the patio.
- Gaps: seal gaps after a nest is gone. - Food: cover plates and drinks outdoors. - Trash: keep lids tight and bins away from doors. - Fruit: pick up fallen fruit. - Spring checks: knock down small nests early.
Ground nests: what to do.
Keep kids and pets away. Don't mow over it. Don't pour gasoline or water in. Pros treat ground nests at night, when the colony is home. Mark the hole with a flag.
A nest, or just visitors?
A nest shows steady traffic to one spot. Watch at dusk, when they fly home. Follow the line back to an eave, vent, shrub or hole. Wasps on flowers or trash cans may come from far away.
Treating a small nest yourself, safely.
- Leave it overnight, then bag the nest. - Only if it’s small, low and out in the open. - Never if anyone in the house is allergic. - Wait until dusk, when wasps are home and slow. - Wear long sleeves, pants and gloves. - Use a jet wasp spray from several feet away. - Never spray from a ladder.
Wasps and pets.
Most stings just swell a little. your vet if the throat swells or breathing changes. Keep pet food and water bowls indoors in late summer. Dogs often snap at wasps and get stung on the face.
Kids and wasps.
Swatting makes a sting more likely. Check play sets, slides and playhouses for nests each spring. Use cups with lids for sweet drinks outside. Teach kids to walk away calmly.
After the nest is gone.
Seal the gap a wall nest used once it's quiet. Check nearby eaves for new starts. Knock down small new nests early next spring. Wasps don't reuse old nests.
Wasps at picnics and barbecues.
- Kids: teach them to walk away calmly. - Drinks: use cups with lids or straws. - Food: keep it covered until you eat. - Trash: bag scraps and close the bin. - Calm: don’t swat; slowly move away.
Ground nests in the lawn.
Watch for wasps flying in and out of the grass. Mark it, and keep mowers and kids away until it's treated. Yellowjackets often nest in old rodent holes.
Questions to ask before you sign.
- Is a return visit included? - What kind of wasp is it? - How will you treat a nest inside the wall? - Is removal of the dead nest included?
What affects the price
- Open comb, or hidden in a wall.
- Distance from the company's base and travel time.
- Number of nests found on the property.
- Colony size, which climbs sharply from June to September.
- Ground nest with multiple entrances or deep burrows.
- Species: paper wasps cost least, hornets and yellowjackets more.
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What's your biggest concern about wasps?
When to call for help
Call for nests in walls, attics, the ground, or anywhere high. right away if anyone in the house is allergic. Don't seal a hole wasps are using. They'll find another way in.
What you can do yourself
A small, reachable paper wasp nest is a fair DIY job. Spray it at dusk with a wasp aerosol. Knock it down the next day. Big, high or hidden nests are a job for a pro.
Wasps in Waltham
With summer highs near 83°F in Waltham, colonies grow fast and are biggest by August. Winter lows near 19°F in Waltham end the season; only new queens survive, tucked into sheltered spots. In denser parts of Waltham, nests turn up in eaves, balconies, signs and wall gaps.
Local research
Wasps in Waltham, 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 Waltham, 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 Waltham
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
- Clean outdoor eating areas right after meals.
- Repair torn window screens and door sweeps.
- Pick up fallen fruit under trees promptly.
- Cap hollow fence posts, railings and play-set tubes.
- Plug weep holes with mesh inserts, not solid caulk.
- Fill old rodent burrows and mulch-bed holes in spring.
In apartment buildings, one nest in a shared wall or balcony can affect several units. Let the building manager know so it gets treated once, properly.Did you know?
A bald-faced hornet is actually a yellowjacket, not a true hornet
European hornets hunt at night and are drawn to porch lights
Questions people ask
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.
What should I do if I get stung?
An antihistamine helps with itching. 911 for trouble breathing or a swelling throat.
Do wasp traps work?
They catch some yellowjackets, but rarely fix a nest problem. Place them away from where people sit.
How long does wasp nest removal take?
Usually under an hour. Hidden nests may need a second visit a few days later.
What time of day should a wasp nest be treated?
At dusk or after dark, when they're home and calm.
How common are wasp sightings?
Across Waltham, very common in late summer, when colonies peak and wasps go looking for sweet food.
How often should you check your property for wasp nests?
Every week or two from spring through late summer. Across Waltham, look under eaves, decks, sheds and play equipment, where small nests are easy to deal with.
Are hornets common in Waltham?
Bald-faced hornets are, in trees and on eaves.
Nearby cities
Related guides
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