Spider Control in Longmont, CO
- Pest Control Service in Longmont
- Rodent Control (Mice & Rats)
- Rodent Exclusion & Entry-Point Sealing
- Ant Control
- What's included: full interior and exterior inspection, hand removal of webs and egg sacs from eaves and soffits, targeted treatment of foundation lines, window wells, garage perimeters, and basement or crawlspace voids, plus a written Entry-Point Report showing where they get in.
- How fast: most Longmont spider jobs are scheduled within a few business days, and a standard single-family visit takes roughly 60 to 90 minutes on site.
- What it costs: spider service starts at $250, with most Longmont homes landing in the $250 to $450 range depending on square footage, eave height, and how much of the basement or crawlspace needs work.
- What we target: black widows in window wells and garages, funnel weavers along foundation lines, cellar spiders in unfinished basements, wolf spiders wandering indoors in fall, and orb weavers rebuilding on porch lights.
- How to book: call or text (303) 531-5636 for a free on-site inspection and an exact quote before any treatment starts.
Spiders are predators, so they follow prey. A basement stacked with boxes near Old Town Longmont, a porch light drawing midges off McIntosh Lake, or a moist window well on the shaded north side of a Southmoor Park ranch all create the same thing: reliable food and undisturbed corners. That is why a hardware-store spray along the baseboard rarely holds. It kills the spider you saw and leaves the egg sacs, the harborage, and the insect traffic that brought them there. Our approach removes webbing and sacs by hand, treats the surfaces spiders actually cross, and documents the gaps — garage door sweeps, crawlspace vents, sill-plate cracks in Front Range clay-heavy foundations, unscreened basement windows — that need sealing to change the pattern long-term.
Spider work fits differently than a general perimeter service. If you are seeing occasional wanderers in a finished home in Somerset Meadows or Clover Basin, a single targeted visit with web removal and exterior treatment is usually enough for the season. If your home has an unfinished basement, a crawlspace, or a detached garage — very common in Mill Village, Lake Park, and older Longmont blocks — expect the work to focus below grade, where humidity and clutter keep populations going year-round. Homes near irrigated greenbelts and water, including properties off the St. Vrain Greenway, Union Reservoir, and Left Hand Creek, tend to carry heavier insect pressure, so those addresses often benefit from a repeat visit in late spring and again in early fall rather than one-and-done. The trade-off is honest: a single treatment reduces what you see quickly, while recurring pressure from a creek corridor or a damp crawlspace needs either sealing work or a seasonal rhythm to stay ahead of.
<strong>Black widows deserve their own paragraph.</strong> In Longmont they show up most often in window wells, under deck framing, in stacked landscape brick, and along the back wall of garages — dark, dry, undisturbed spots at ground level. We check those areas specifically on every spider call, remove the messy tangle webbing and any egg sacs found, and treat the voids they retreat into. Wolf spiders are a different story: they hunt on the ground and come in through door sweeps and garage gaps, which is why September and October calls in Prospect New Town, Fox Meadows, Rider's Ridge, and Ute Creek spike as canyon nights cool. Those are entry-point problems more than chemistry problems, and the report tells you exactly which gap to fix.
<strong>Products, pets, and gardens.</strong> We use EPA-registered products applied per label, focused on cracks, voids, eaves, and perimeter bands rather than broadcast spraying across living space. Our technician will tell you the re-entry interval before starting and will keep applications off vegetable beds, chicken runs, and pet bowls on request — say the word during the walkthrough. You will also get a straight answer about what treatment will and will not do: it reduces spider activity and removes existing webbing, but it does not make a cluttered crawlspace or an open garage door spider-proof. <strong>We find how they get in</strong>, we tell you plainly, and we treat what treatment can actually solve.
Call (303) 531-5636Spider Control pricing in Longmont
| Spider service minimum (small home, condo, or single-area focus) | $250 |
| Standard single-family interior + exterior spider treatment with web removal | $250 - $375 |
| Larger or two-story home, tall eaves and multiple elevations | $325 - $475 |
| Basement / crawlspace-focused spider treatment (unfinished spaces) | $275 - $425 |
| Black widow-focused work: window wells, deck framing, garage voids | $250 - $400 |
| Detached garage, shed, or outbuilding added to a scheduled visit | From $250 |
| Seasonal follow-up visit (spring and fall pressure) | $250 - $325 |
| Entry-Point Report and on-site inspection | Free with a scheduled service quote |
Exact price confirmed free on-site before any work.
Spider Control — questions, answered
How much does spider control cost in Longmont, CO?
Spider control in Longmont starts at $250, and most single-family homes fall between $250 and $450. Price depends on square footage, eave height, number of window wells, and whether an unfinished basement or crawlspace needs treatment. The exact figure is confirmed at the free on-site inspection, before any work begins.
Are black widows common in Longmont homes?
Black widows are found in Longmont, most often in window wells, under decks, in stacked landscape block, and along garage back walls. Every ProShield spider visit includes a check of those specific harborage spots, hand removal of webbing and any egg sacs located, and treatment of the voids they retreat into.
Is spider treatment safe around dogs and vegetable gardens in Longmont?
Yes, when applied correctly. ProShield uses EPA-registered products applied per label in cracks, voids, eaves, and perimeter bands rather than broadcast across living areas, and the technician states the re-entry interval before starting. Tell us where your dog runs, where your raised beds are, and where pet bowls sit during the walkthrough and we keep applications off those areas.
Why do spiders come back weeks after a DIY spray in my Longmont basement?
Because the egg sacs and the food supply survived. Retail sprays kill the spider you see but leave webbing, sacs, and the insects that draw spiders into a basement. Longmont basements with humidity, stored boxes, and unscreened window wells keep producing new spiders, which is why our service pairs physical web and sac removal with an Entry-Point Report on the gaps that need sealing.
When is the worst spider season in Longmont?
Late summer through October is the heaviest stretch in Longmont. Orb weavers reach full size and rebuild nightly on porch lights, and wolf spiders start wandering indoors through door sweeps and garage gaps as canyon nights cool. Homes near water and greenbelts — the St. Vrain Greenway, McIntosh Lake, Union Reservoir, and Left Hand Creek corridors — usually see the strongest fall activity.