The short version
Around Ames, 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.
Anyone in Ames dealing with wasps, hornets or yellowjackets at home.
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.
- 1Buzzing audible through a ceiling or wall on warm afternoons.
- 2Wasps appearing indoors near light fixtures or windows.
- 3Dead wasps collecting on interior windowsills in late summer.
- 4Steady wasp traffic in and out of one soffit gap.
- 5Large wasps circling porch lights after dark.
- 6Wasps disappearing into a hole in the lawn or a wall.
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
Not every buzzing insect is a wasp. Not every wasp is a threat. A careful look separates a lone paper wasp from a yellowjacket colony in Ames.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Aerial Nest Treatment and Removal
$100–$400
A treated nest should go quiet within a day. A few stragglers are normal. Ask whether removal and a follow-up check are included.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
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
Sealing Up After the Nest Is Dead
$150–$450
This is the step homeowners skip most often. Sealing the void after treatment keeps the next colony out.
- 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.
Once a nest is dead, screening and sealing gaps around pipes and vents keeps next year's queen from using the same opening.Which wasps live around Ames.
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 Iowa 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 Ames.
Local wasps conditions in Ames.
Across Ames, the area is mostly suburban, 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 Ames usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Ames'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 Ames and Iowa 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. Ames 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 Ames out to Ankeny and Urbandale share the same favorite nest spots. Plenty of homes in Ames have basements, but most nests are higher up.
A year of wasps in Ames.
- Winter: lows near 12°F in Ames. Nests die; only queens survive. - Spring: queens start new nests around May. Knock down small starts. - Summer: highs near 84°F in Ames 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
- Sting allergy in the home requiring extra precautions.
- After-hours, weekend or emergency scheduling.
- Species: paper wasps cost least, hornets and yellowjackets more.
- Dense siding, brick or stone that limits dust access.
- Colony size, which climbs sharply from June to September.
- Exposed comb versus enclosed nest inside a wall or soffit.
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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 Ames
With summer highs near 84°F in Ames, colonies grow fast and are biggest by August. Winter lows near 12°F in Ames end the season; only new queens survive, tucked into sheltered spots. In Ames's neighborhoods, eaves, decks, play sets and shrubs are favorite nest sites.
Local research
Wasps in Ames, IA: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Iowa, when they are busiest around Ames, and what the state figures look like. Everything below links to the agency or university page it came from.
Wasp species recorded in Iowa
- 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 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…
- Native paper wasps (Polistes spp. (e.g., P. fuscatus, P. apachus, P. exclamans)) — Open umbrella-shaped nests under eaves, porch ceilings and railings. UC IPM: paper wasp colonies 'vary between 15 to 200 individuals'; Penn State: queens 'establish nests in May…
When wasps are busiest around Ames
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).
Bald-faced hornet range per Penn State covers most of the 48 contiguous states and D.C.
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: CDC MMWR; Baldfaced Hornet; European Paper Wasp; Yellowjackets and Other Social Wasps (Pest Notes). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wasps away
- Note where nests appeared and inspect there early next year.
- Fill gaps in retaining walls and stacked stone.
- Move hummingbird feeders away from doors and patios.
- Trim shrubs so nests cannot hide near walkways.
- Clean outdoor eating areas right after meals.
- Plug weep holes with mesh inserts, not solid caulk.
For a nest in the ground or a wall, a pro treats the entrance and checks back to make sure the traffic has stopped before anything is sealed.Did you know?
Only newly mated queens survive the winter
Yellowjacket nests are never reused a second year
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.
What should I do if I get stung?
An antihistamine helps with itching. 911 for trouble breathing or a swelling throat.
Can wasps damage my house?
Rarely by much. Yellowjackets in walls can chew through drywall. Carpenter bees do more wood damage.
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.
Are wasps dangerous to my pets?
They can be. Dogs often get stung on the face. your vet if swelling spreads or breathing changes.
How seriously do people take wasp problems?
Across Ames, most people act once a nest is near a door, deck or play area, where stings are most likely.
When is wasp season in Ames?
Around Ames, 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 Ames?
Bald-faced hornets are, in trees and on eaves.
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Sources (8)
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