The short version
True moles are rare here; check for gophers or voles. Find an active tunnel, then trap it. Repellents and sonic stakes rarely work.
- Usually one to three moles.
- Find an active runway first.
- Traps work best; repellents rarely do.
- Moles eat earthworms, not plants.
- Fix the lawn after trapping.
Homeowners in Boulder with tunnels, ridges or mounds in the lawn.
What to look for
Their tunnels lift turf, dry out roots and trip people up. Gophers and voles here are busiest in spring and fall. One mole can dig a lot of tunnel. Moles don't eat plants. They hunt earthworms and grubs.
- 1Raised ridges across the lawn.
- 2Round, volcano-shaped dirt mounds.
- 3Spongy patches underfoot.
- 4Tunnels along walkways and beds.
- 5Fresh mounds after rain.
- 6Dead turf strips over tunnels.
Why it’s worth acting soon
- Tunnels spread across the lawn.
- Mounds make mowing harder.
- Ridges become trip hazards.
- New moles move into empty tunnels.
Treatment options and typical costs
Runway Identification and Activity Survey
$75–$200
A provider in Boulder starts by walking the lawn and separating active runways from exploratory tunnels. Surface ridges get pressed flat and checked the next day. The ones that pop back up are the tunnels worth treating in Boulder.
- Time
- 45–90 minutes
- Best for
- Every job; trapping fails without it
Mole-Labeled Baits
$100–$300 per application
Bait labeling matters in Boulder: products registered for moles must be applied by their label, with the stated amounts and placement. Ask to see the label and where bait went. Grain baits meant for other pests do not work on moles in Boulder.
- Time
- 30–45 minutes
- Best for
- Large or hard-to-trap areas; used exactly as labeled
Lawn, Moisture, and Bed Exclusion Work
$150–$450 depending on scope
A pro may suggest aerating and fixing wet spots. Drier, firmer soil holds fewer worms near the surface. That makes the yard a poorer feeding ground.
- Time
- 1–4 hours
- Best for
- Repeat problems; protecting beds and small areas
Follow-Up Monitoring
$50–$150 per visit; often included in plans
Some Boulder providers offer seasonal monitoring for properties that border open land. It is priced per visit or as a yearly plan. For Boulder homeowners with recurring moles, that is often cheaper than starting fresh each year.
- Time
- 20–30 minutes per visit
- Best for
- Every trapping job; confirms the yard is clear
Prices are typical published ranges. Ask what’s included before you compare quotes.
Main runways often follow edges like beds, walks and fences. That's where traps work best.Which moles live around Boulder.
True moles are uncommon around Boulder. Most lawn tunnels and mounds here are pocket gophers or voles. Pocket gophers eat roots and leave crescent-shaped mounds. Voles leave surface runways in the grass. If the mounds around Boulder are crescent-shaped, it's a gopher. Shallow runways through the grass point to voles. Both eat plants, so treatment differs from mole trapping.
When they tunnel.
Frozen ground in winter sends them deeper. Summer heat and drought also push them down.
Moles have big, spade-like front feet built for digging. They eat earthworms and grubs, not plants.Finding an active tunnel.
Look for fresh ridges and mounds after rain. Step down a short stretch of tunnel and mark it. Check it in a day or two. If it's raised again, it's active. Main runways often follow edges: walks, fences and beds. Lawns from Boulder out to Broomfield and Longmont show the same pattern.
A year of moles in Boulder.
- Spring: peak tunneling. Best time to trap. - Summer: highs near 86°F in Boulder push moles deeper. - Fall: a second burst near the surface. - Winter: lows near 20°F in Boulder. Ground freezes; moles go deep.
Mole, gopher or vole?
- Mole: raised ridges and round, volcano-like mounds. - Gopher: crescent-shaped mounds with a plugged hole. - Vole: surface runways and small holes in the grass. - Damage: moles don’t eat plants; gophers and voles do.
What works, and what doesn’t.
- Works: traps set in active runways. - Sometimes: labeled baits, used deep in tunnels. - Rarely: castor oil, sonic stakes, gum or flooding. - Rarely alone: grub control, since they mostly eat earthworms.
Protecting garden beds.
Bury quarter-inch hardware cloth around beds, about two feet deep. Bend the bottom edge outward. Raised beds can get a mesh floor before you fill them. It's work up front, but it lasts for years.
Lawn care that helps.
Water deeply but less often. Constantly wet lawns draw earthworms, and moles follow. Healthy turf recovers from tunnels faster. Grub control alone rarely moves moles on.
Signs the problem is over.
- No new mounds for two weeks. - Stepped-down runways stay flat. - Traps stay untouched for several checks. - New ridges? Another mole may have moved in.
Choosing a trap.
- Scissor traps: set straddling an active runway. - Harpoon traps: set on top of a pressed-down ridge. - Tunnel traps: sit inside a dug-out runway. - Placement: main runways beat fresh feeding ridges. - Rules: check what your state allows first.
Mole myths.
- Chewing gum in tunnels: no evidence it works. - Castor oil: may move them briefly, not away. - Moles eat bulbs: no, voles using their tunnels do. - Many mounds, many moles: usually it’s one or two. - Flooding tunnels: they just dig new ones.
Moles aren’t all bad.
Moles loosen and aerate soil. They eat grubs and other insect larvae. A mole in a field may be fine to leave. In a front lawn or garden, most people want them gone.
Fixing the lawn afterward.
Wait until the mole is caught. Rake mounds flat and step ridges down. Water to settle the soil. Overseed bare spots in spring or fall.
Moles, kids and pets.
Moles don't bite unless handled. Keep kids and pets away from traps. Baits must go deep in tunnels, exactly as the label says. Digging dogs can wreck a lawn faster than moles.
What a mole visit looks like.
The tech walks the lawn and maps the tunnels. They test which runways are active. Traps go into the main runways. They check traps every day or two.
Moles, voles or gophers?
- Moles: raised ridges and round, volcano-shaped mounds. - Voles: narrow surface runways through the grass. - Gophers: crescent-shaped mounds with a plugged hole. - Chipmunks: small clean holes with no soil around them.
Watering and moles.
Moles follow moist soil, where worms rise near the surface. Water deeply and less often instead of a little every day. Fix leaky sprinklers that leave soggy corners.
Flower beds and borders.
Moles tunnel under beds looking for worms, not to eat plants. Plants wilt when their roots are left hanging in air pockets. Press tunnels down firmly and water to settle the soil.
Questions to ask before you sign.
- Is it a mole, gopher or vole? - Which method will you use? - How often will you check traps? - What if another mole moves in? - Is lawn repair included?
Moles by the numbers.
In Boulder, moles do not eat plants; they tunnel for earthworms, grubs, and soil insects, and the ridges they leave behind are what most people notice. In Boulder, tunnels often run just under the surface, with deeper nesting chambers below, and a single mole can maintain an extensive system across a yard. In Boulder, because moles are solitary, several fresh ridges usually mean more than one animal. In Boulder, before you hire, walk the yard and flatten a few ridges with your foot, then check back the next day — the ones that are raised again are the active runs a plan should target.
What affects the price
- Seasonal monitoring plans versus one-time service.
- Travel distance to rural properties.
- Buried barriers for raised beds or gardens.
- Lot size and number of active runways.
- State rules that affect trap or bait choices.
- Single visit versus a multi-visit trapping plan.
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What bothers you most about moles?
When to call for help
Call if new mounds keep appearing for more than a week. if you can't find an active runway. A pro can usually catch the mole within a few visits.
What you can do yourself
Skip sonic stakes, gum and flooding. Set the trap exactly as the instructions say. Trapping yourself can work.
Moles in Boulder
Boulder gets about 20 inches of rain a year, so moles favor watered lawns and shady beds. Winter lows near 20°F in Boulder freeze the ground, so moles go deeper until spring. In Boulder, parks, ballfields and watered yards see the most tunneling.
Local research
Moles in Boulder, CO: what the public record shows
Before you compare quotes, it helps to know which moles actually live in Colorado, when they are busiest around Boulder, and what the state figures look like. Everything below links to the agency or university page it came from.
Mole species recorded in Colorado
- Eastern mole (Scalopus aquaticus) — Range across most of the eastern U.S. to Wyoming and Colorado; the only mole in Missouri.
When moles are busiest around Boulder
Breeding late winter, young in March or April.
Most burrowing complaints west of the eastern plains in Colorado involve pocket gophers or voles rather than moles.
Rules that apply in Colorado
Sources: Colorado Parks and Wildlife; Moles; Virginia Cooperative Extension (Virginia Tech). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep moles away
- Edge beds with buried hardware cloth.
- Check for fresh mounds after rain.
- Act early in spring.
- Fix tunnels only after trapping.
- Skip sonic stakes and castor oil.
A quick sketch of where fresh mounds appear helps pinpoint the active runways.Did you know?
Mole fur lies flat both ways, allowing reverse travel
A mole tunnel constantly to find food
Questions people ask
Are moles rodents?
No. They're insectivores, related to shrews. They eat earthworms and grubs, not plant roots.
Why are moles in my yard but not my neighbor's?
Moist, loose soil full of earthworms draws them. Watered lawns and shady beds are favorites.
Do I need a permit to trap moles?
Rules vary by state. Ask a local company what's allowed in Colorado.
How many moles are in my yard?
Usually just one to three.
Are mole baits safe around pets and children?
Use them only as the label directs, deep in tunnels. Traps are often the safer choice.
Does chewing gum get rid of moles?
No. In Boulder, there is no evidence that chewing gum kills or repels moles, and this folk remedy keeps showing up despite having no basis in how moles actually eat. Moles feed on earthworms and grubs, not gum. In Boulder, time spent on folk remedies is better spent setting traps in the active runs.
Is the GopherHawk trap popular for moles?
In Boulder, the GopherHawk is a commonly discussed scissor-jaw trap, but popularity is not the same as effectiveness. In Boulder, like any trap, it works only when set in an active run and checked often. In Boulder, choose a trap you can set correctly and check daily, and focus on finding the active tunnel first.
When are moles most active in Boulder?
Spring and fall, especially after rain. Frozen winter ground sends them deep.
Are moles common in Boulder?
Not very. Around Boulder, gophers and voles cause most lawn damage.
Nearby cities
Related guides
Sources (5)
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 Mole Exterminator · Updated September 11, 2026 · How we write these guides