Spider control · Utah
Spider Control in Utah
Spiders are the most common thing Utah homeowners call us about, and nothing else is close. We have logged 11,104 spider treatments at 7,124 homes in the last five years, so we have a decent idea of when they turn up and why.
Text (385) 425-1766 with a question, or a photo of the spider if you have one. We will get back to you free, usually same day. And no, it is almost certainly not a brown recluse.
What our spider work actually looks like
Beeline service records, 2022 through 2026
These are our service records, not a survey of the local spider population.
How common this actually is
Spiders are the most common pest call in Utah
Across every pest we treat, spiders account for 17.7% of all the pest work we do. Nothing else comes within five points of that. If you are wondering whether what you are seeing is normal, it is about as normal as it gets.
Over the full twenty five years of our records we have logged 49,433 spider treatments. In the last five years alone, 11,104 of them, at 7,124 Utah homes, in 186 cities and towns.
We mention that because a lot of pest control advertising runs on making you think something is wrong with your house. With spiders, usually nothing is. About one in five homes we serve has needed spider work on top of their routine service, and the houses that do are not unusual ones. They have a porch light, a window well, and a summer. Everyone on one of our plans gets spiders treated as part of the regular visit, whether they ever ring us about them or not.
Homes that call us about spiders also tend to call about wasps (25.2% of them), ants (19.9%) and mice or other rodents (11.3%). Those three turn up together often enough that it is worth a single look at the whole exterior rather than four separate visits.
When spiders actually show up in Utah
This is every spider call we logged between 2022 and 2026, sorted by the month it came in. 11,104 actual visits, not an estimate.
Scroll the chart sideways to see the full year →
Two things in that curve are worth pointing out.
The season is long, not a summer spike
Calls open in April, climb through spring, and peak in July at 16.5% of the year. No surprises there. The part people do not expect is the right hand side: September and October together carry 25.7% of our spider year, which is more than any two summer months except June and July. October alone still runs at 12.7%, almost exactly what June does.
In practice, April through October carries about 88% of all our spider calls, and December through February carries 3.5% combined. So spiders are less a July problem than a seven month one with a bump in July.
The autumn half has a specific cause
That autumn shoulder is not spiders breeding harder. It is the males leaving their webs to go looking for females, and wandering into houses on the way. Utah State University Extension is direct about the timing: male hobo spiders “will seek females for mating from August through October”, which lines up with when they turn up indoors, and USU notes more broadly that in autumn many spiders are “nearing the end of their life, searching for mates and laying eggs”.
So the spider crossing your living room floor in late September is usually a lone male that wandered in, not the first sign of a nest somewhere in the house. It also means autumn work is mostly about the exterior and the perimeter rather than anything indoors.
Start earlier than you think, then keep it up
Our call volume peaks in July. The useful work starts earlier than that. USU Extension notes that for outdoor hobo spider work, “insecticide sprays work best when egg sacs are hatching, typically from mid May to mid June in northern Utah”.
Put those two together and most people start about six weeks later than they could have. A spring treatment gets ahead of the hatch, and a house that is already protected going into June does not have the August problem that an untreated one does.
None of which is an argument for waiting if it is already July. One treatment does not cover a seven month season. The curve on this page runs from April to the end of October, so whenever you are reading this the right move is the same: get a treated barrier up now, and keep it up through the rest of the year rather than letting it lapse and starting again from nothing next spring. That is the whole logic of a plan, and it is why ours runs through the winter instead of stopping in September.
Spiders are the one pest in Utah with no geography
We publish city level differences on most of our pest pages, because they are usually real. Box elder bugs run 1.6 times heavier in Farmington than the rest of our service area. Bed bugs run 1.7 times heavier in West Valley. Spiders do not do that. They are about as even across the state as anything we track, and that is worth saying out loud.
Scroll the chart sideways to see the full year →
Look at the right hand column rather than the bars. Salt Lake City produced 1,212 spider treatments and Murray produced 220, a difference of more than five times. But one in 4.8 homes we serve in Salt Lake City has needed spider work, and one in 4.6 in Murray. Across every major city on that list the number sits between one in 4.5 and one in 5.4.
Even at the extremes it barely moves. Spanish Fork is the highest indexing city in our whole service area for spiders and it is only 1.26 times the rest. Park City is the lowest at 0.82 times, and our read there is elevation and a shorter warm season rather than anything about the houses.
So if you are searching for spider control in Ogden, Layton, Sandy, West Jordan, Provo, Tooele, Herriman or anywhere else we go, the honest answer is that your city is not special. Which is useful, because it means anybody telling you your neighbourhood has an unusual spider problem is selling you something.
Where you live does change which spiders you are likely to meet, and that is worth a section of its own.
Identification
Which spiders you actually have in Utah
Utah State University Extension lists the spiders people in this state genuinely encounter: western black widow, hobo spider, wolf spiders, banded orb weaver, cat face spider, golden huntsman (giant crab spider), and tarantula. In twenty five years of service calls, that list matches what our technicians find.
Black widow
The one that actually warrants caution. The adult female is “shiny black with a red hourglass on the underside of the abdomen”. Males are about a third her size and are not the concern. USU describes black widows as preferring “pre-existing holes in dark, undisturbed areas” and being “common around building foundations, rock piles, wood piles, outbuildings”. They hide by day and sit in the web at night.
That description is a map of where we find them: window wells, the underside of deck framing, the gap behind a downspout, meter boxes, the back corner of a garage, and the first two rows of a wood pile. USU calls a black widow bite a serious health risk, particularly to children and elderly people, while also noting that “the odds of experiencing severe or life threatening complications from a bite are small”. Both of those are true, so we say both.
Hobo spider
Common and widely misunderstood. USU states the species is “now distributed throughout northern Utah” and that it turns up in homes mainly from August through October, which is the autumn shoulder in our own call data.
This is the part we had wrong on this page until recently, along with most of the internet. You almost certainly cannot identify a hobo spider by looking at it. USU is blunt: “The only sure way to identify a spider as a hobo spider is to compare its reproductive structures”, which takes a microscope. Colour and leg markings are not reliable. If a company tells you confidently that the spider in your hallway is a hobo, based on a photo, they are guessing.
Wolf spiders
Big, fast, hairy and ground hunting, and the most common reason somebody calls us in a panic. They do not build a web to catch prey, they run things down, which is why you meet one out in the open on a floor rather than tucked in a corner. They are not dangerous. They are just alarming at speed.
Orb weavers, cat face spiders and giant crab spiders
The large web builders that appear on porches, in door frames and across gates in late summer. Cat face spiders and banded orb weavers are the ones that build a new web across your front step every night in September. The golden huntsman, or giant crab spider, is the flat, long legged one on a wall that makes people reach for the phone. None of the three is a health concern. They are a webbing and nerves problem, which is real enough, just not the problem people think they have.
The question we get most
Almost certainly not a brown recluse
We get sent photos of suspected brown recluse spiders constantly, and the answer is almost always the same. Utah State University Extension puts it plainly: “The brown recluse lives in the southern and Midwestern U.S., but not in Utah.”
There is one caveat worth stating rather than glossing over. USU also notes that “only one species of brown spider has a range that possibly includes the southwestern tip of Utah”. That is the far corner of Washington County, down around St. George, and a possible range is not the same as an established population. Across northern Utah, where the large majority of our work is, from Utah County up through Weber and Box Elder and west into Tooele, a brown recluse is not what you are looking at.
What people are actually looking at is usually a hobo spider, a wolf spider, or a common house spider. The brown violin shape that everyone looks for is also present on several harmless species, which is part of why the myth survives.
One more thing, because it matters more than the identification. USU points out that “you can rarely identify spider bites based only on symptoms”, and that the only way to confirm which spider bit you is to have the spider. A doctor diagnosing a wound as a spider bite without a spider is making an educated guess, and in Utah that guess is frequently wrong. If you have a wound you are worried about, see a doctor about the wound, not a pest company about the spider.
The hobo spider bite story has changed
For about twenty years, hobo spiders were widely blamed for necrotic, flesh damaging bites. That is no longer where the evidence sits, so we have updated this page rather than keep a scarier claim that would sell better.
USU Extension now states: “No significant scientific evidence suggests that hobo spiders have a necrotic (flesh eating) bite” and that “the likelihood of hobo spiders having venom of medical importance to humans is extremely unlikely”. USU also notes that “study after study now suggests that their bites do not cause necrotic lesions”, and that the CDC does not list hobo spiders among venomous species toxic to humans.
So why treat for them at all? Because a few hundred spiders turning up around the house every autumn is genuinely unpleasant to live with, and because the same exterior work that keeps hobo numbers down keeps black widows down too. That seems like reason enough without attaching a horror story to it.
USU’s overall assessment of this state is worth quoting as the last word: “Overall, spiders in Utah carry a very low risk when you consider their abundance, presence and behavior.”
The work itself
What a Beeline spider treatment actually involves
Most spider pages never actually say what the work involves, so here it is.
- De-webbing the exterior. Eaves, soffits, porch ceilings, door frames, light fixtures, window frames, gable vents and the undersides of decks and railings. This is the part that changes how your house looks immediately, and it is also the part that removes egg sacs rather than just the adults.
- A perimeter band at the foundation. The ground to wall junction is the route in. This is where the product does the most work and where it needs refreshing through the season.
- Window wells, meter boxes and utility penetrations. Window wells in particular are black widow habitat in this state and get checked every visit.
- Harborage around the structure. Wood piles, rock borders, stored materials against the wall, and the first few feet of landscaping, which is where the food supply lives.
- Garages, crawl spaces and sheds where needed. Attached garages are the most common interior finding, because the door spends half the summer open and the walls are usually bare block or framing.
- Straight identification. If what you have does not need treating, we will say so. If it is a black widow in a window well, we will show you.
Most of the work sits on the outside, because that is where the spiders are coming from. We treat the inside as well, as a second barrier behind the exterior one. The spiders you find in a basement or a bathroom came in from outdoors, and an interior treatment picks up whatever gets past the perimeter before it settles in. Tell us which rooms you are actually seeing them in and the technician will treat those.
Before you pay for anything
Spiders are already covered on a Beeline plan
If you are on our quarterly plan or the Freedom Plan, spider service is part of what you already pay for. There is no spider add on, no separate spider charge, and no upsell when a technician finds webbing on your eaves. 13,560 Utah homes are on one of our plans, and every one of them has spiders covered without thinking about it.
We can show that from our own billing rather than just asserting it. Over the last five years our technicians wrote 2,461 separate spider service lines while already at a property on a plan visit, and a third of them were written at no charge at all. The rest were bigger jobs on top of the routine visit, like a full de-web of a two storey or a heavy window well treatment, and those were quoted before the work started.
What else the plan covers
Spiders are one of 19 pests included. The full list is ants, beetles, centipedes, clover mites, cockroaches, crickets, earwigs, hornets, mice, millipedes, pill bugs, rats, silverfish, snails, spiders, springtails, voles, wasps and yellowjackets. That is the whole list, not a sample. Roughly three in ten of the homes that first called us about spiders are on a plan now, and the reason people switch is usually arithmetic: you pay close to what a single treatment costs and the other 18 pests come with it.
Full plan details are on our plan page.
It runs all year, which is the part people miss
Spiders are a seven month problem, but a plan is not a seven month service. We logged 118,686 plan visits in the last five years and they are spread right across the calendar, with 29% of them falling between November and February. That is deliberate. Several of the 19 pests on the list do not keep to the summer, mice peak in November, and the treated perimeter that holds spider numbers down in July only works if it is kept current through the quiet months.
If something comes back between scheduled visits, we come back and re-treat it at no charge. That is the part people actually end up using.
What actually works between visits
None of this requires us. It is the advice our technicians give at the door, and it is drawn from USU Extension’s own recommendations.
- Knock the webs down, repeatedly. Vacuuming or sweeping down webs and egg sacs is the most effective thing you can do yourself, and USU lists it first. A spider that has to rebuild every three days usually moves.
- Change the porch light. Lights pull in the insects that spiders eat. USU specifically recommends switching exterior bulbs to sodium vapour, and warm LED is the modern equivalent. Fix the food supply and the spiders follow it elsewhere.
- Check the window wells. In Utah houses this is where black widows turn up more than anywhere else, and a well full of leaf litter is the ideal version of what USU describes as their habitat. Clear them out, and look before you reach in.
- Move the harborage off the wall. Wood piles, rock borders and stored material stacked against the house are black widow habitat. Give it eighteen inches of clearance and that changes.
- Reduce the clutter in basements and storage rooms. Dark and undisturbed is all they need.
- From August through October, pull beds away from walls and move bed skirts. That is USU’s own advice for the wandering male season, and it costs nothing.
What we would not bother with: peppermint, lavender, eucalyptus or citronella sprays. We have seen no reliable evidence they control spiders in a Utah house, and we are not going to recommend something just because it is a popular search.
A Utah spider calendar
Built from the month by month shape of our own 11,104 spider calls.
| When | What is happening | What to do |
|---|---|---|
| December to February | The quietest stretch of the year. These three months are 3.5% of our spider calls combined. Anything you see indoors has been in the house since autumn. | Vacuum webs and clear window wells. Nothing urgent, and a good time to book ahead. |
| March and April | The season opens. April jumps to 8% of the year as the ground warms and prey insects return. | Book the first exterior treatment. Getting ahead of the season costs less than chasing it. |
| May and June | Climbing hard. USU puts hobo egg sac hatch in northern Utah at mid May to mid June, which is when outdoor treatment does the most work. | The best time to start. Exterior perimeter, full de-web, window wells, and get on a schedule that holds the barrier through the season. |
| July and August | The peak. July alone is 16.5% of our spider year. This is when most people call, which is a little late. | Still very much worth treating. Expect a refresh before autumn, because the season has three months left to run. |
| September and October | The second half most people do not expect. These two months carry 25.7% of the year. Male spiders are wandering to find mates and coming indoors while they do. | Perimeter refresh around the foundation and garage, plus an interior treatment if they are getting in. |
| November | Falling away fast, down to 5.9%. Orb weaver webs on the porch are finishing for the year. | Last de-web. Clear wood piles and stored material off the wall before winter. |
Common Utah spider control questions
Are there brown recluse spiders in Utah?
Not in northern Utah. Utah State University Extension states that the brown recluse lives in the southern and Midwestern United States but not in Utah. USU does note one species of brown spider whose range may possibly include the far southwestern tip of the state, down around St. George in Washington County, but a possible range is not the same as an established population. Anywhere along the Wasatch Front and north, what people have is almost always a hobo spider, a wolf spider or a common house spider.
When is the best time to treat for spiders in Utah?
Spring, and then keep it going. USU Extension notes that outdoor sprays work best when egg sacs are hatching, typically mid May to mid June in northern Utah, so a spring start gets you ahead of the season. The season itself runs April through to the end of October, and one treatment does not cover seven months. So if you are reading this in August, the answer is still to start now. There is a third of the season left, the autumn half is busier than most people expect, and a barrier that is already up beats starting from nothing next spring.
Why do I suddenly have spiders in September and October?
Because the males are out looking for females. USU Extension notes that male hobo spiders seek mates from August through October, and that many spiders in autumn are nearing the end of their lives, searching for mates and laying eggs. Our own records match: September and October carry 25.7% of our spider calls for the year. The spider crossing your floor in late September is usually a lone wandering male rather than a sign of an indoor population.
Is a hobo spider bite dangerous?
The evidence has shifted. USU Extension states that no significant scientific evidence suggests hobo spiders have a necrotic bite, that venom of medical importance to humans is extremely unlikely, and that study after study now suggests their bites do not cause necrotic lesions. The CDC does not list hobo spiders among venomous species toxic to humans. We treat for them because they are unpleasant in numbers, not because they are dangerous.
How do I know if it is a black widow?
The adult female is shiny black with a red hourglass on the underside of the abdomen. Males are about a third the size and are not the concern. They like pre-existing holes in dark undisturbed places, and USU lists building foundations, rock piles, wood piles and outbuildings. In Utah houses that means window wells, under deck framing, meter boxes and the back corner of the garage. Text us and describe it, or send a photo, and we will tell you free.
Can you tell me if it is a hobo spider from a photo?
Honestly, no, and neither can anyone else. USU Extension says the only sure way to identify a hobo spider is to compare its reproductive structures, which needs a microscope. Colour and markings are not reliable. What we can tell you, from a photo or just a description, is whether you are looking at something that matters, which is usually the real question.
Is spider control included in my plan?
Yes. Spiders are one of 19 pests included in the quarterly plan and the Freedom Plan at no additional charge, along with ants, wasps, yellowjackets, hornets, mice, rats, voles, cockroaches, earwigs, crickets, silverfish, springtails, centipedes, millipedes, pill bugs, snails, clover mites and beetles. 13,560 Utah homes are on one of our plans. If spiders come back between scheduled visits, we re-treat at no charge.
Do you spray inside the house for spiders?
Yes. The exterior does most of the heavy lifting, since that is where spiders are coming from, but the interior treatment works as a second barrier behind it and picks up anything that gets past the perimeter. Tell us which rooms you are seeing them in when you book and the technician will treat those as well as the outside.
Do natural spider repellents like peppermint oil work?
We have not seen reliable evidence that they control spiders in a Utah house, so we do not recommend them. The things that do work are free: knock the webs down regularly, change the porch light so it pulls in fewer insects, clear out the window wells, and move wood piles off the wall.
Is a one time spider treatment or a plan better value?
It depends how your year goes, and we will tell you straight. A one time treatment makes sense if you have a specific problem in a specific month and nothing else going on. A plan makes sense if you would rather not think about it, because spiders run April through October here and the same visit covers 18 other pests. For most houses the plan costs close to what a couple of one off visits would, and it includes free re-treatment between scheduled visits. Ask us to put both numbers side by side before you decide.
How much does spider control cost?
It depends on the size of the house, how much exterior webbing there is, and whether you want a one time treatment or ongoing service. We quote the price before any work starts and there are no hidden charges. Text or call and we will give you a number.
Which Utah cities do you cover for spider control?
We have treated for spiders in 186 Utah cities and towns in the last five years, including Salt Lake City, Ogden, Layton, Sandy, West Valley City, West Jordan, Syracuse, Bountiful, Roy, South Jordan, Kaysville, Murray, Provo, Tooele and Herriman. Our office is in Clearfield and we run established routes rather than one off trips.
Does my city have a worse spider problem than others?
Almost certainly not. Spiders are the one pest in our data with essentially no geography. Across every major city we serve, between one in 4.5 and one in 5.4 homes has needed spider work, and the gap between the highest and lowest indexing cities in our whole service area is small. If somebody tells you your neighbourhood is unusually bad for spiders, ask what they are basing it on.
Three ways to get a spider quote
All of them free, all of them with a real person at our Clearfield office.
- 1Text us a message or photo(385) 425-1766. Fastest answer. Ask us a question, or send a picture of the spider, the web or the window well, and we will tell you what it is and what it costs.
- 2Call us(801) 544-9200. Mon to Fri 7:30am to 7:00pm, Sat 7:30am to 4:00pm.
- 3Fill in the formBest if you are reading this at midnight. We will come back to you the next working morning.
Where this page gets its information
The numbers come from Beeline’s own appointment records: 755,865 service lines across 113,103 households between 2001 and 2026. Spider figures on this page cover 2022 through 2026 unless stated otherwise. These are records of work we performed. They describe what Utah homeowners called us about, not a census of Utah’s spider population, and we have tried to be careful about the difference throughout.
The biology and the safety guidance come from Utah State University Extension: