PEST SERVICES
Millipede Control
A line of little dark, coiling bodies along the garage threshold. Dozens turning up dead on the basement floor after a storm. Millipedes do not bite, sting, or damage anything, but when they migrate they arrive in numbers, and that alone is enough to unsettle a household.
OMNIS Pest Control has handled millipede invasions on Castle Rock area properties for over 13 years. The work is exclusion and moisture management at the perimeter, not fogging the yard, because millipedes are passing through from the soil rather than living inside.

PEST THREAT LEVEL
2/10
LOW
A Nuisance, Not a Danger
Millipedes do not bite or sting, and they do not damage your home, your food, or your belongings. Indoors it is too dry for them to survive, so the ones that get in usually die within a day or two, which is why you find them dead on a basement or garage floor. A few species can release a mild defensive fluid that may irritate skin if you handle them, which is reason enough to sweep rather than squash. The real problem is volume during a migration, when they push toward foundations by the dozen.
THE LOCAL CONTEXT
Why Millipedes Show Up Around Castle Rock Homes
Millipedes live in soil and leaf litter, feeding on decaying plant matter, and they need moisture to survive. Most of the year you never see them. The trouble starts when conditions change, whether a heavy rain floods their habitat or a dry spell drives them out looking for water. Either way they move, and a house in their path becomes a destination.
Around Castle Rock the usual sources are mulch beds banked against the foundation, overwatered landscaping, leaf litter that holds damp, and window wells that collect debris. Once they reach the structure they slip in under doors, through weep holes, and around basement windows. They are not coming in to stay. They are coming in because the perimeter gave them an easy way through.
Effective control is not about spraying the whole yard. It is about drying out and sealing the band right around the house where they cross, so the migration breaks against the perimeter instead of coming through the door.

THE OMNIS DIFFERENCE
Why Local Homeowners Choose OMNIS for Millipede Control
Millipede problems are a perimeter-and-moisture job, not a spray-the-lawn job. We have refined that approach over more than a decade of work on Castle Rock area properties.

Local Since 2012
Over 13 years working Castle Rock, Parker, and Douglas County. We know the seasons millipedes move and the parts of a property that pull them in.

Moisture First
Millipedes need damp to survive. We find the moisture sources against the foundation that invite them and fix the conditions, because that is what actually keeps them out.

Perimeter Exclusion
The work happens at the structure: sealing the gaps they use, treating the band where they cross, and clearing the damp harborage along the foundation.

Seasonal Timing
Migrations come on a schedule tied to weather. We can time treatment to the moisture swings that trigger the worst pushes rather than reacting after they are already inside.
HOW WE WORK
Our 4-Step Millipede Control Process
Every property is different. The framework is the same: assess, dry out, treat, monitor. The specifics on your property come from a free on-site assessment.

1
Property Assessment
FREE ON-SITE
Walk the property with you. Find the moisture sources and harborage against the foundation, the entry points they are using, and the rooms where they are getting in.
2
Moisture & Harborage
ROOT CAUSE
Address what is holding damp against the house: overgrown mulch beds, leaf litter, poor drainage, window wells full of debris. Dry the band around the foundation and you remove the reason they gather there.
3
Perimeter Treatment
SEAL THE BAND
A targeted treatment on the band where millipedes cross into the structure, plus sealing the gaps under doors and around basement windows they use to get in.
4
Monitoring
PREVENT RETURN
Migrations recur with the weather. We can stay engaged through the active months and adjust around the rain and dry swings that drive the worst pushes.
PRICING
How Pricing Works
Pricing depends on property size, how much moisture and harborage work the perimeter needs, and whether you want one-time clearing or seasonal monitoring. Quoted free after an on-site assessment.
WHERE WE WORK
Millipede Control Across the Castle Rock Area
We are a local, family-owned operation. We do not subcontract, we do not run a franchise, and the technician who works your property is the same one who comes back to check the traps.
SERVING CASTLE ROCK · PARKER · HIGHLANDS RANCH · MONUMENT · CASTLE PINES · LARKSPUR · THE PINERY · ROXBOROUGH
COMMON QUESTIONS
Millipede Questions We Get All the Time
The same questions come up every migration season. Straight answers from over a decade of working millipedes in the Castle Rock area.
Are millipedes dangerous?
Not really. They do not bite or sting, and they do not carry disease or damage your home. A few species release a mild defensive fluid that can irritate skin if you pick them up, so it is best to sweep or vacuum rather than handle them.
Why are there suddenly so many?
Millipedes migrate when the weather shifts. A heavy rain that floods the soil, or a dry stretch that pushes them out looking for moisture, sends them moving in numbers, often straight toward foundations. The surge usually lasts a week or two.
Will they breed or live inside my house?
No. It is too dry indoors for them to survive. The ones that get in usually die within a day or two, which is why you tend to find them dead on a basement or garage floor rather than thriving.
Does spraying the yard get rid of them?
Broadcast spraying is the wrong tool. Millipedes are passing through from the soil, so the work that matters is drying out and sealing the band right around the house, not treating open lawn.
How do they keep getting inside?
Gaps under doors, weep holes, foundation cracks, and basement window wells. During a migration even small openings let them through in numbers, so sealing those entry points is a core part of the job.
Can I keep them out myself?
You can cut the pressure a lot: pull mulch back from the foundation, fix drainage and overwatering, clear leaf litter and window wells, and seal the obvious gaps. When a migration still pushes through, that is when professional perimeter work earns its place.
Get Millipedes Out of Your Home
Free property assessment. Honest recommendations. Perimeter and moisture work that addresses why they are coming in. If they are turning up by the dozen along the foundation, the time to break the cycle is before the next migration.
We have served Castle Rock, Parker, and Douglas County for over 13 years. We find the moisture and entry points, treat the band where they cross, and keep the perimeter sealed.
Call 720-583-4126 or contact us online to get started.
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