The short version
Around Gillette, 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 Gillette dealing with wasps, hornets or yellowjackets at home.
What to look for
Near a door or deck, stings will happen. Late-summer colonies are big and quick to sting. Wasps defend the area around their nest.
- 1Small golf-ball-sized paper nests under eaves in spring.
- 2Dead wasps collecting on interior windowsills in late summer.
- 3Wasps entering an attic vent, dryer vent or weep hole.
- 4Wasps hovering at a mulch bed or retaining wall gap.
- 5Steady wasp traffic in and out of one soffit gap.
- 6Wasps flying straight lines to and from one spot.
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
The inspection also flags anyone in the Gillette household with a sting allergy, which changes how and when the work gets done. Ask for photos of what was found.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Aerial Nest Treatment and Removal
$100–$400
Exposed paper wasp and hornet nests under eaves, in trees or on porch ceilings in Gillette are treated with a fast-acting aerosol or dust, then removed once the colony is dead. Most are handled in a single visit.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
Sealing Up After the Nest Is Dead
$150–$450
Sealing is priced by the number and size of openings. One gap is quick; a row of open vents takes longer.
- Time
- 1–2 hours
- Best for
- Sealing the gap once the nest is dead
Ground and Wall-Void Nest Treatment
$150–$500
Expect a return visit for void nests around Gillette homes, because dust works over several days rather than minutes. The follow-up confirms the colony is finished before sealing.
- Time
- 30–60 minutes plus a return visit
- Best for
- Yellowjackets in lawns, retaining walls, soffits and wall voids
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 Gillette.
Bald-faced hornets build big gray nests in trees and eaves. They cause most stings. Western 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 Gillette. They rarely sting. Mud daubers build tube-shaped mud nests.
Local wasps conditions in Gillette.
An inspection in Gillette usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Around Gillette, the area is mostly rural, 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. Gillette sits in a semi-arid continental climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October). A provider who works Gillette and Wyoming 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 Gillette'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.
A ground nest looks like wasps streaming from one hole. Watch for traffic in and out of gaps. Check eaves, attic vents and window frames. Plenty of homes in Gillette have basements, but most nests are higher up.
A year of wasps in Gillette.
- Spring: queens start new nests around May. Knock down small starts. - Winter: lows near 12°F in Gillette. Nests die; only queens survive. - Late summer: peak season. Workers hunt sweets near people. - Summer: highs near 87°F in Gillette 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
- Local labor rates and seasonal demand.
- Preventive spring treatment bundled with removal.
- Number of nests found on the property.
- Colony size, which climbs sharply from June to September.
- Species: paper wasps cost least, hornets and yellowjackets more.
- Roof pitch and safe access to the nest location.
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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
Big, high or hidden nests are a job for a pro. Knock it down the next day. Spray it at dusk with a wasp aerosol. A small, reachable paper wasp nest is a fair DIY job.
Wasps in Gillette
Winter lows near 12°F in Gillette end the season; only new queens survive, tucked into sheltered spots. Around Gillette's open land, barns, sheds and the ground all host nests. Gillette only gets about 13 inches of rain a year, so local wasps often gather at pools, fountains and dripping taps.
Local research
Wasps in Gillette, WY: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Wyoming, when they are busiest around Gillette, and what the state figures look like. Everything below links to the agency or university page it came from.
Wasp species recorded in Wyoming
- Western yellowjacket (Vespula pensylvanica) — UC IPM: 'the most commonly encountered species and is sometimes called the "meat bee"' in California and the Western states; ground and wall-void nester and aggressive scavenger…
- 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 Gillette
Western yellowjacket queens start nests each spring, colonies grow through summer and scavenge aggressively in fall before dying off; only fertilized queens overwinter (USU).
Bald-faced hornet range per Penn State covers most of the 48 contiguous states and D.C. Western yellowjacket is the dominant scavenging wasp of the Western states (UC IPM).
Rules that apply in Wyoming
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; Yellowjackets and Other Social Wasps (Pest Notes); Baldfaced Hornet; European Paper Wasp. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wasps away
- Hang wasp traps at the yard edge, not the patio.
- Repair torn window screens and door sweeps.
- Fill old rodent burrows and mulch-bed holes in spring.
- Mow at dawn when ground-nesting wasps are sluggish.
- Note where nests appeared and inspect there early next year.
Jot down where nests turned up this year. Queens often pick the same eaves and gaps, so you'll know where to look first next spring.Did you know?
Fig wasps pollinate figs and are smaller than a rice grain
Wasp nest paper inspired early experiments in making paper from wood
Questions people ask
What time of day should a wasp nest be treated?
At dusk or after dark, when they're home and calm.
Should I be worried about a nest in the ground?
Ground nests are usually yellowjackets. Mowing over them sets them off. Yes, if it's near a path or play area.
How do I find a good wasp control company?
Check that they're licensed in Wyoming. Ask how they treat hidden nests and whether removal is included.
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.
Can I just leave the nest alone until winter?
If it's out of the way, often yes. Around Gillette, nests die back after the first hard freeze in fall.
How seriously do people take wasp problems?
Around Gillette, most people act once a nest is near a door, deck or play area, where stings are most likely.
What stops people from dealing with wasp nests?
Around Gillette, fear of stings, nests that are hard to reach, and not noticing them until they're big.
When is wasp season in Gillette?
Around Gillette, 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 Gillette?
Bald-faced hornets are, in trees and on eaves. Most stings come from yellowjackets, though.
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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