The short version
Around Salt Lake City, 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 Salt Lake City with a nest near a door, deck or play area.
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.
- 1Yellowjackets crowding trash cans, soda cans and pet food.
- 2Wasps appearing indoors near light fixtures or windows.
- 3Wasps hovering at a mulch bed or retaining wall gap.
- 4Pets pawing at their face after sniffing a lawn spot.
- 5Small golf-ball-sized paper nests under eaves in spring.
- 6Wasps clustered at a hummingbird feeder or ripe grapes.
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 Salt Lake City: 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
Ground and Wall-Void Nest Treatment
$150–$500
Ground nests can hold thousands of yellowjackets by late summer. Mowing over one sets them off. Treatment is done in protective gear, usually at dusk.
- 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
Once the nest is dead, the gap gets sealed. Caulk, copper mesh or a soffit patch works. Old nests are not reused, but the gap invites new queens.
- Time
- 1–2 hours
- Best for
- Sealing soffits, vents and gaps after a wall nest has died
Preventive Spring Treatment and Follow-Up
$150–$400
Preventive work makes the most sense for Salt Lake City homes that have had nests two years running, or where someone has a sting allergy. It is a modest cost compared with a wall-void job.
- Time
- 45–90 minutes
- Best for
- Sting allergies or repeat nest spots
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 Salt Lake City.
They cause most stings. Bald-faced hornets build big gray nests in trees and eaves. Mud daubers build tube-shaped mud nests. They rarely sting. Paper wasps are the most common around Salt Lake City. They build open, umbrella-shaped combs under eaves and railings. Western yellowjackets nest in the ground and in wall voids.
Local wasps conditions in Salt Lake City.
An inspection in Salt Lake City usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Salt Lake City'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 Salt Lake City and Utah 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. Salt Lake City sits in a semi-arid continental climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October). For Salt Lake City homes, 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 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. A ground nest looks like wasps streaming from one hole. Homes from Salt Lake City out to Millcreek and Taylorsville share the same favorite nest spots. Plenty of homes in Salt Lake City have basements, but most nests are higher up. Check eaves, attic vents and window frames.
A year of wasps in Salt Lake City.
- Late summer: peak season. Workers hunt sweets near people. - Summer: highs near 92°F in Salt Lake City help colonies grow fast. - Spring: queens start new nests around May. Knock down small starts. - Winter: lows near 23°F in Salt Lake City. Nests die; only queens survive.
Wasp, hornet or bee?
- 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. - Paper wasp: slim, long legs, open comb. - Honey bee: fuzzy and golden. about relocation.
If you get stung.
An antihistamine can ease itching and swelling. Wash the sting and use a cold pack. Move away from the nest first. If someone carries an epinephrine pen, use it. 911 for trouble breathing or a swollen face or throat.
Keeping wasps away from the patio.
- Spring checks: knock down small nests early. - Fruit: pick up fallen fruit. - Trash: keep lids tight and bins away from doors. - Food: cover plates and drinks outdoors. - Gaps: seal gaps after a nest is gone.
Ground nests: what to do.
Don't mow over it. Keep kids and pets away. Mark the hole with a flag. Pros treat ground nests at night, when the colony is home. Don't pour gasoline or water in.
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.
- 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. - Only if it’s small, low and out in the open. - Leave it overnight, then bag the nest.
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.
- Calm: don’t swat; slowly move away. - Trash: bag scraps and close the bin. - Food: keep it covered until you eat. - Drinks: use cups with lids or straws. - Kids: teach them to walk away calmly.
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.
- Is removal of the dead nest included? - How will you treat a nest inside the wall? - What kind of wasp is it? - Is a return visit included?
What affects the price
- Sealing gaps after the nest is dead.
- An open comb or a nest inside a wall.
- Distance from the company's base and travel time.
- After-hours, weekend or emergency scheduling.
- 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
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 Salt Lake City
In denser parts of Salt Lake City, nests turn up in eaves, balconies, signs and wall gaps. Winter lows near 23°F in Salt Lake City end the season; only new queens survive, tucked into sheltered spots. Salt Lake City only gets about 16 inches of rain a year, so local wasps often gather at pools, fountains and dripping taps.
Local research
Wasps in Salt Lake City, UT: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Utah, when they are busiest around Salt Lake City, and what the state figures look like. Everything below links to the agency or university page it came from.
Wasp species recorded in Utah
- 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 Salt Lake City
USU: western yellowjacket 'queens start new every spring; colonies grow throughout the summer months'; 'Colony dies off every fall; fertilized queens overwinter'; they 'scavenge in fall making outdoor events dangerous'.
USU: western yellowjacket 'Nests pose a serious health risk to humans'.
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
- Walk the eaves in April and knock down starter nests.
- Store pet food indoors and clean bowls after meals.
- Seal soffit seams and fascia gaps before spring.
- Cover drinks outdoors and use lidded cups for kids.
- Check sheds and garages for nests each May.
- Trim shrubs so nests cannot hide near walkways.
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?
Mud daubers stock their nests with paralyzed spiders
Some paper wasps can tell their nestmates apart by their faces
Questions people ask
Are wasps dangerous to my pets?
your vet if swelling spreads or breathing changes. Dogs often get stung on the face. They can be.
How do I find a good wasp control company?
Check that they're licensed in Utah. Ask how they treat hidden nests and whether removal is included.
Should I be worried about a nest in the ground?
Mowing over them sets them off. Ground nests are usually yellowjackets. Yes, if it's near a path or play area.
Can wasps damage my house?
Carpenter bees do more wood damage. Yellowjackets in walls can chew through drywall. Rarely by much.
Do wasp traps work?
They catch some yellowjackets, but rarely fix a nest problem. Place them away from where people sit.
Are wasps considered an under-controlled pest?
Often, yes. For Salt Lake City homes, many nests go unnoticed until late summer, when colonies are biggest and most defensive.
How often should you check your property for wasp nests?
Every week or two from spring through late summer. For Salt Lake City homes, look under eaves, decks, sheds and play equipment, where small nests are easy to deal with.
Are hornets common in Salt Lake City?
Bald-faced hornets are, in trees and on eaves. Most stings come from yellowjackets, though.
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