The short version
Around Glendale, queens start nests in March, 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 Glendale 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.
- 1Dead wasps collecting on interior windowsills in late summer.
- 2Large wasps circling porch lights after dark.
- 3Sudden wasp interest in overripe fruit under a tree.
- 4Chewed, scarred wood on fences, decks or cedar siding.
- 5Wasps appearing indoors near light fixtures or windows.
- 6Wasps hovering at a mulch bed or retaining wall gap.
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
Watching flight lines at midday usually reveals the entrance. For Glendale homes, that step separates a quick aerial nest job from a wall-void problem that needs dust and a return visit.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Sealing Up After the Nest Is Dead
$150–$450
Ask the Glendale pro to wait at least a few days after a dust treatment before closing anything. Sealing too early is how most void jobs go wrong.
- Time
- 1–2 hours
- Best for
- Sealing the gap once the nest is dead
Aerial Nest Treatment and Removal
$100–$400
Colonies die off each autumn in Glendale, so an empty nest found in winter is harmless and can simply be knocked down. Active nests in summer are a different matter.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
Ground and Wall-Void Nest Treatment
$150–$500
Never seal a live void nest. Plugging the hole too early can drive wasps into the house.
- 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.
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 Glendale.
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 Glendale. They build open, umbrella-shaped combs under eaves and railings. Western yellowjackets nest in the ground and in wall voids.
Local wasps conditions in Glendale.
An inspection in Glendale usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Glendale'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 Glendale and Arizona 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. Glendale sits in a hot desert climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October). For Glendale 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.
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 with the first hard freeze, around November. Early spring is the easiest time to remove small starts.
Where they nest around houses here.
Watch for wasps flying in and out of a gap. A ground nest looks like wasps streaming from one hole. Homes from Glendale out to Peoria and Phoenix share the same favorite nest spots. Many homes in Glendale sit on slabs, so check eaves, the garage and patio covers first. Look under railings, play sets and grills.
A year of wasps in Glendale.
- Summer: highs near 106°F in Glendale help colonies grow fast. - Late summer: peak season. Workers hunt sweets near people. - Winter: lows near 43°F in Glendale. Some nests keep going. - Spring: queens start new nests around March. Knock down small starts.
Wasp, hornet or bee?
- 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. - Honey bee: fuzzy and golden. about relocation. - Paper wasp: slim, long legs, open comb.
If you get stung.
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. Wash the sting and use a cold pack.
Keeping wasps away from the patio.
- Trash: keep lids tight and bins away from doors. - Fruit: pick up fallen fruit. - Spring checks: knock down small nests early. - Gaps: seal gaps after a nest is gone. - Food: cover plates and drinks outdoors.
Ground nests: what to do.
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. Keep kids and pets away.
A nest, or just visitors?
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. A nest shows steady traffic to one spot.
Treating a small nest yourself, safely.
- 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. - Leave it overnight, then bag the nest. - Only if it’s small, low and out in the open.
Wasps and pets.
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. Most stings just swell a little.
Kids and wasps.
Check play sets, slides and playhouses for nests each spring. Use cups with lids for sweet drinks outside. Teach kids to walk away calmly. Swatting makes a sting more likely.
After the nest is gone.
Check nearby eaves for new starts. Knock down small new nests early next spring. Wasps don't reuse old nests. Seal the gap a wall nest used once it's quiet.
Wasps at picnics and barbecues.
- Food: keep it covered until you eat. - Trash: bag scraps and close the bin. - Calm: don’t swat; slowly move away. - Kids: teach them to walk away calmly. - Drinks: use cups with lids or straws.
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.
- How will you treat a nest inside the wall? - Is removal of the dead nest included? - Is a return visit included? - What kind of wasp is it?
What affects the price
- Number of nests found on the property.
- Nest height and whether a ladder or lift is needed.
- An open comb or a nest inside a wall.
- Ground nest with multiple entrances or deep burrows.
- Species: paper wasps cost least, hornets and yellowjackets more.
- After-hours, weekend or emergency scheduling.
📊
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
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 Glendale
Glendale only gets about 9 inches of rain a year, so local wasps often gather at pools, fountains and dripping taps. Winter lows near 43°F in Glendale are mild enough that colonies hang on late into the year. In denser parts of Glendale, nests turn up in eaves, balconies, signs and wall gaps.
Local research
Wasps in Glendale, AZ: what the public record shows
Before you compare quotes, it helps to know which wasps actually live in Arizona, when they are busiest around Glendale, and what the state figures look like. Everything below links to the agency or university page it came from.
Wasp species recorded in Arizona
- 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 Glendale
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 Arizona
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
- Repair torn window screens and door sweeps.
- Fill old rodent burrows and mulch-bed holes in spring.
- Move hummingbird feeders away from doors and patios.
- Cap hollow fence posts, railings and play-set tubes.
- Plug weep holes with mesh inserts, not solid caulk.
- Screen attic, gable and dryer vents with fine mesh.
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?
Yellowjacket nests are never reused a second year
A bald-faced hornet is actually a yellowjacket, not a true hornet
Questions people ask
Do wasp traps work?
They catch some yellowjackets, but rarely fix a nest problem. Place them away from where people sit.
Can I seal the hole wasps are using?
No. Sealing traps them inside. They may chew into your house. Treat first, then seal once activity stops.
What time of day should a wasp nest be treated?
At dusk or after dark, when they're home and calm.
Are wasps good for anything?
Yes. They eat caterpillars and other pests. Leave nests that are well away from 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.
What's the usual way to get rid of a nest?
For Glendale homes, a dust or spray into the nest opening at dusk, then removal once activity stops.
When is wasp season in Glendale?
Around Glendale, queens start nests in March, and colonies peak in late summer. Nests die back with the first hard freeze, around November.
Are hornets common in Glendale?
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