The short version
Moles are usually one to three animals. 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.
Anyone in Portland watching their lawn get dug up.
What to look for
Moles don't eat plants. They hunt earthworms and grubs. Their tunnels lift turf, dry out roots and trip people up. Moles around Portland are busiest in spring and fall. They tunnel near the surface after rain. One mole can dig a lot of tunnel.
- 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
Not every ridge is active. Moles abandon many feeding tunnels after one pass. The survey finds the main runways connecting nests to feeding areas. Those straight, long-used tunnels are where control in Portland works best.
- Time
- 45–90 minutes
- Best for
- Every job; trapping fails without it
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
Mole-Labeled Baits
$100–$300 per application
Ask any Portland provider what product they use and to confirm it is labeled for moles. Label directions are legally binding, and off-label use is not acceptable. Used correctly, baits give Portland yards a second tool alongside traps.
- Time
- 30–45 minutes
- Best for
- Large or hard-to-trap areas; used exactly as labeled
Active-Runway Trapping
$150–$400 per visit; multi-visit plans $300–$900
Because a single mole can cover a large area, one yard in Portland often holds only one or two animals. Trapping removes them one by one and confirms success. Most Portland providers plan on several rechecks before calling a job finished.
- Time
- 30–60 minutes per visit, over several visits
- Best for
- Most yards; the most reliable method
Prices are typical published ranges. Ask what’s included before you compare quotes.
Round, volcano-shaped mounds come from deeper mole tunnels. Gopher mounds are crescent-shaped with a plugged hole.Which moles live around Portland.
They eat earthworms and grubs, not roots. Moles are insectivores, not rodents. Hairy-tailed moles prefer woods. Star-nosed moles favor wet spots here. It's gray, about six inches long, with big spade-like front feet. The eastern mole is the one digging up lawns around Portland.
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.
Lawns from Portland out to South Portland and Scarborough show the same pattern. Main runways often follow edges: walks, fences and beds. If it's raised again, it's active. Check it in a day or two. Step down a short stretch of tunnel and mark it. Look for fresh ridges and mounds after rain.
A year of moles in Portland.
- Spring: peak tunneling. Best time to trap. - Winter: lows near 14°F in Portland. Ground freezes; moles go deep. - Fall: a second burst near the surface. - Summer: highs near 78°F in Portland push moles deeper.
Mole, gopher or vole?
- Mole: raised ridges and round, volcano-like mounds. - Damage: moles don’t eat plants; gophers and voles do. - Vole: surface runways and small holes in the grass. - Gopher: crescent-shaped mounds with a plugged hole.
What works, and what doesn’t.
- Works: traps set in active runways. - Rarely alone: grub control, since they mostly eat earthworms. - Rarely: castor oil, sonic stakes, gum or flooding. - Sometimes: labeled baits, used deep in tunnels.
Protecting garden beds.
Bend the bottom edge outward. Bury quarter-inch hardware cloth around beds, about two feet deep. It's work up front, but it lasts for years. Raised beds can get a mesh floor before you fill them.
Lawn care that helps.
Constantly wet lawns draw earthworms, and moles follow. Water deeply but less often. Grub control alone rarely moves moles on. Healthy turf recovers from tunnels faster.
Signs the problem is over.
- No new mounds for two weeks. - New ridges? Another mole may have moved in. - Traps stay untouched for several checks. - Stepped-down runways stay flat.
Choosing a trap.
- Scissor traps: set straddling an active runway. - Rules: check what your state allows first. - Placement: main runways beat fresh feeding ridges. - Tunnel traps: sit inside a dug-out runway. - Harpoon traps: set on top of a pressed-down ridge.
Mole myths.
- Chewing gum in tunnels: no evidence it works. - Flooding tunnels: they just dig new ones. - Many mounds, many moles: usually it’s one or two. - Moles eat bulbs: no, voles using their tunnels do. - Castor oil: may move them briefly, not away.
Moles aren’t all bad.
They eat grubs and other insect larvae. Moles loosen and aerate soil. In a front lawn or garden, most people want them gone. A mole in a field may be fine to leave.
Fixing the lawn afterward.
Rake mounds flat and step ridges down. Wait until the mole is caught. Overseed bare spots in spring or fall. Water to settle the soil.
Moles, kids and pets.
Keep kids and pets away from traps. Moles don't bite unless handled. Digging dogs can wreck a lawn faster than moles. Baits must go deep in tunnels, exactly as the label says.
What a mole visit looks like.
They test which runways are active. The tech walks the lawn and maps the tunnels. They check traps every day or two. Traps go into the main runways.
Moles, voles or gophers?
- Moles: raised ridges and round, volcano-shaped mounds. - Chipmunks: small clean holes with no soil around them. - Gophers: crescent-shaped mounds with a plugged hole. - Voles: narrow surface runways through the grass.
Watering and moles.
Water deeply and less often instead of a little every day. Moles follow moist soil, where worms rise near the surface. Fix leaky sprinklers that leave soggy corners.
Flower beds and borders.
Plants wilt when their roots are left hanging in air pockets. Moles tunnel under beds looking for worms, not to eat plants. Press tunnels down firmly and water to settle the soil.
Questions to ask before you sign.
- Is it a mole, gopher or vole? - Is lawn repair included? - What if another mole moves in? - How often will you check traps? - Which method will you use?
Moles by the numbers.
Around Portland, 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. Around Portland, because moles are solitary, several fresh ridges usually mean more than one animal. Around Portland, tunnels often run just under the surface, with deeper nesting chambers below, and a single mole can maintain an extensive system across a yard. Around Portland, moles do not eat plants; they tunnel for earthworms, grubs, and soil insects, and the ridges they leave behind are what most people notice.
What affects the price
- Irrigation and drainage corrections.
- Season, since spring and fall book fastest.
- Lot size and number of active runways.
- Access around fences, slopes, and dense plantings.
- Seasonal monitoring plans versus one-time service.
- State rules that affect trap or bait choices.
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What bothers you most about moles?
When to call for help
if you can't find an active runway. Call if new mounds keep appearing for more than a week. A pro can usually catch the mole within a few visits.
What you can do yourself
Set the trap exactly as the instructions say. Skip sonic stakes, gum and flooding. Trapping yourself can work.
Moles in Portland
Winter lows near 14°F in Portland freeze the ground, so moles go deeper until spring. Around Portland, parks, ballfields and watered yards see the most tunneling. With about 47 inches of rain a year, Portland keeps soil soft and full of earthworms, which moles love.
Local research
Moles in Portland, ME: what the public record shows
Before you compare quotes, it helps to know which moles actually live in Maine, when they are busiest around Portland, and what the state figures look like. Everything below links to the agency or university page it came from.
When moles are busiest around Portland
October-April wet season. Pacific Northwest: Townsend's moles in lawns west of the Cascades; body-gripping traps illegal in Washington.
Based on Portland’s humid continental climate profile.
Rules that apply in Maine
Sources: Maine Department of Agriculture, Conservation and Forestry, Board of Pesticides Control; Internet Center for Wildlife Damage Management; 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.
Ask what the quote covers if another mole moves in after the first one is caught.Did you know?
Moles can tunnel quickly through soft soil in soft soil
Star-nosed moles can smell underwater using air bubbles
Questions people ask
Why do repellents and sonic stakes not work on moles?
Moles get used to them or tunnel around them. Studies show little lasting effect.
How long does professional mole control take?
Usually one to three weeks of regular trap checks.
Is the mole still in my yard?
Step down a short section of tunnel. If it's raised again in a day or two, it's active.
Are moles rodents?
They're insectivores, related to shrews. They eat earthworms and grubs, not plant roots. No.
Are mole baits safe around pets and children?
Use them only as the label directs, deep in tunnels. Traps are often the safer choice.
Will a dog get rid of moles in the yard?
Around Portland, a dog may dig up a few tunnels and chase one mole off, but it will not clear a tunnel system, and the digging can do more lawn damage than the mole. Trapping in active runs remains the reliable method. Around Portland, usually not, and there is no evidence that dogs are a reliable control.
Do homeowners prefer DIY mole trapping or hiring a pro?
Around Portland, many homeowners try trapping themselves first because it is the cheapest option and traps are sold everywhere. Around Portland, a professional usually makes sense when tunnels keep reappearing after several weeks of trapping, when the damage covers a large area, or when you would rather not handle traps and dispose of animals yourself.
When are moles most active in Portland?
Spring and fall, especially after rain. Frozen winter ground sends them deep.
Are moles common in Portland?
Yes.
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