We treat wasp nests across 20 cities, and the one job for you before the technician arrives is keeping people and pets away from the nest. This guide covers how to tell paper wasps from yellowjackets, which nests should never be a DIY job, the mistakes that set off an attack, and what professional treatment involves.
A grey papery comb under the eave, or a stream of yellowjackets pouring out of a hole in the lawn, usually gets noticed in August. By then the colony has been building since spring and is at its largest and most defensive. That's the worst time to improvise with a broom handle.
This guide is about getting rid of a wasp nest without anyone getting stung. It covers identifying the wasp, judging the location, what you can reasonably do yourself, what you shouldn't touch, and what professional treatment involves for homes in Temecula, Murrieta, Menifee or any of the 20 cities we cover. UC IPM's Pest Note on yellowjackets and other social wasps is the source for the biology. For telling bees from wasps, read our bees vs wasps guide first. Bees aren't something we remove.
How do I know which wasp built the nest?
The shape and the place tell you which wasp you have, and you can read both from a distance. An open comb with visible cells hanging from a single stalk under an eave, a porch ceiling, a deck rail or inside a barbecue lid is a paper wasp nest. You'll see long-legged brown and yellow wasps resting on it. A hole in the ground, a weep hole or a gap under the roof tiles with steady traffic in and out, and no visible nest, is a yellowjacket nest. UC IPM notes the western yellowjacket nests underground in most of California, often in an old rodent burrow, and that colonies in wall voids and attics are common too. Grey mud tubes stuck to stucco, under eaves or in the garage belong to mud daubers, which are solitary and rarely sting. A football-sized grey paper ball hanging in a tree is an aerial yellowjacket, less common here. The species sets the plan: mud daubers are a scrape and a rinse, paper wasps are manageable when small, and yellowjackets are a technician's job.
When should you never try to remove a wasp nest yourself?
Don't touch a nest yourself if it's yellowjackets, if it's in the ground, a wall or an attic, if you'd need a ladder, or if anyone in the house is allergic to stings. Those four conditions cover most of the nests people find in Southern California yards. Add to the list any nest bigger than a fist, any nest with heavy traffic, any nest near a door, walkway, pool or play area, and any spot you can't back away from quickly, such as a slope, a roof or a crawl space. The reason is how social wasps defend a colony. UC IPM describes yellowjackets as the most aggressive of the group, attacking in numbers and pursuing whatever disturbed the nest, and each wasp stings repeatedly. On a ladder in Lake Elsinore in August that's a fall as well as the stings. A ground nest hit by a mower in Winchester is a trip to urgent care. The only nest that's a reasonable DIY job is a small, new, paper wasp comb in an open spot you can reach from the ground, with no allergy in the household.
How do I keep people and pets clear of a nest until it's handled?
Mark it, tell everyone, and steer people around it. Put a chair or a cone a good distance from a ground nest so nobody mows, walks or lets the dog dig there, and tape off a porch or a gate under an eave nest. Tell the household, the gardener and the pool service where it is. Keep children and pets inside or on the other side of the house, and keep dogs on a leash in the yard, since a dog snapping at yellowjackets at the entrance is a common way a nest gets stirred up. Close windows near a wall void nest in case the wasps find a way inside, and don't block the entrance hole, which UC IPM warns drives a wall nest into the living space. Keep food, drinks and trash covered so you aren't feeding the foragers near the house. Wasps are calmest in the cool of early morning and after dark, so if you must pass the nest, do it then, slowly, without swatting. Then call (951) 535-4220 and Jenni will line up the next opening. If the schedule has room, ask about a same-day visit.
What mistakes make a wasp nest more dangerous?
Most severe sting incidents come from the same short list of mistakes. Spraying at midday, when the foragers are out, so the returning workers find a disturbed nest and go after whoever is nearest. Knocking a nest down with a broom, rake or pole, which scatters the wasps without killing them and leaves an angry colony with no home. Blocking the entrance of a wall void nest with foam or caulk, which pushes the wasps through the drywall into a bedroom. Pouring water or fuel into a ground nest, which doesn't reach the colony and, with fuel, adds a fire risk to a dry Inland Empire summer. Shining a flashlight straight at a nest after dark, which draws the wasps to the light and the hand holding it. Treating the one nest you found and ignoring the second one under the deck. And using any product without reading its label, which sets the distance, the protective gear and the time of day. Each of these turns a short technician visit into an urgent care trip.
What does professional wasp nest treatment involve?
It starts with identification rather than a spray. UC IPM's guidance on social wasps is to confirm the species from a distance, find every nest on the property, treat at dusk or after dark when the workers are inside, use a product labelled for the nest type, whether an eave comb, a ground entrance or a wall void, and never seal a wall void entrance until the colony is dead. Taking the dead nest down afterwards matters for paper wasps, since next spring's queens are drawn to old comb. A licensed technician does the treatment, and a single nest can be handled without a plan, since one-time treatments start at $249. Tell Jenni about kids and pets when you book, and before leaving the technician will say how long the nest site stays off limits. Our wasp control page covers the service in full. Call (951) 535-4220.
If the nest is small, how do I handle it without getting stung?
If you've decided the nest qualifies, a small new paper wasp comb reachable from the ground with nobody allergic at home, then do it in a fixed order rather than improvising. Watch the nest for a few minutes first to confirm it's paper wasps and to see how many are on it. Clear the area of children, pets, furniture and food and tell the household what you're doing. Wear long sleeves, long pants tucked into socks, closed shoes, gloves and eye protection. Wait until after dark or before dawn, when the workers are on the comb and sluggish, and light the area from the side rather than pointing a beam at the nest. Plan your exit path and clear the hose and the planters off it. If you use a product, follow its label exactly: the distance, the protective gear, where it can be applied, how long to stay away afterwards. Leave the area immediately and don't check until the next day. Only remove the comb once there's no activity, then scrape the stalk off so the site isn't reused. If anything escalates, walk away steadily and call us to finish it.
How do I keep wasps from nesting next year?
Wasp prevention is a spring habit, because every nest starts as one queen and a comb the size of a quarter. Walk the eaves, soffits, porch ceilings, shed, playset, mailbox and barbecue cover every couple of weeks from March, and remove the starter nests while the queen is on her own. Seal the gaps that lead into wall voids and attics: cracks in stucco, gaps under roof tiles, open weep holes, unscreened vents, torn window screens. Keep trash and recycling lids closed and rinse the cans, since sugar residue feeds a colony in September. Clear the windfall under the citrus and the figs, which is a yellowjacket magnet in Fallbrook and Wildomar yards. Fix irrigation leaks, as wasps collect water too. Fill old rodent burrows in the lawn, which is where UC IPM says western yellowjackets usually nest. On a plan, the technician brushes the eaves on each visit, which is where paper wasps start, so starter combs get knocked down before the queen has help. Paper wasps and yellowjackets are a regular part of the summer from Temecula to Carlsbad, and the yards that stay quiet are the ones checked in March.
Common questions
Is it a good idea to remove a wasp nest yourself?
Sometimes, and the exceptions matter more than the rule. A small new paper wasp comb in an open spot you can reach from the ground, with nobody allergic in the house, is a reasonable job for a cautious adult after dark. Ground nests, wall void nests, anything needing a ladder, and any yellowjacket nest are a technician's job.
What is the best time of day to deal with a wasp nest?
After dark or just before dawn. UC IPM recommends treating when nearly all the workers are inside and sluggish from the cool. A midday treatment leaves the foragers out, and they return to a disturbed nest ready to defend it against whoever is standing there.
Why do paper wasps keep building under the same eave?
Paper wasps often do, since a sheltered eave that worked once is attractive to next spring's queens, and old comb left in place encourages it. Yellowjackets don't reuse a nest, but they'll use the same lawn if the rodent burrows are still there. That's why it's worth taking the dead nest down and checking the site each spring.
Do mud dauber nests need treating?
Rarely. Mud daubers are solitary wasps that seldom sting, and their nests are a nuisance rather than a hazard. Scrape the dry mud tubes off the stucco, eaves or garage wall with a putty knife and rinse the spot, or leave them if they're somewhere nobody goes. A hole with steady traffic in and out is a different wasp and a different job.
What about children and pets during a wasp treatment?
The product label sets the re-entry time. Mention children and pets at booking, and you'll be told on the day how long they need to stay away from the spot. Until the visit, keep everyone, dog included, on the opposite side of the house, and tell Jenni about any sting allergies in the household when you call.