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.
Homeowners in Derry with tunnels, ridges or mounds in the lawn.
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 Derry 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 Derry works best.
- Time
- 45–90 minutes
- Best for
- Every job; trapping fails without it
Active-Runway Trapping
$150–$400 per visit; multi-visit plans $300–$900
Because a single mole can cover a large area, one yard in Derry often holds only one or two animals. Trapping removes them one by one and confirms success. Most Derry 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
Lawn, Moisture, and Bed Exclusion Work
$150–$450 depending on scope
Yards next to woods, fields or creeks keep getting new moles. Exclusion barriers protect the beds that matter most in Derry while the open lawn is managed by trapping. This mix gives Derry homeowners a realistic long-term plan.
- Time
- 1–4 hours
- Best for
- Repeat problems; protecting beds and small areas
Mole-Labeled Baits
$100–$300 per application
Worm-shaped baits labeled for moles mimic the earthworms moles eat. They go inside active runways, as the label directs. Across Derry, baits are usually paired with trapping rather than used alone.
- Time
- 30–45 minutes
- Best for
- Large or hard-to-trap areas; used exactly as labeled
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 Derry.
It's gray, about six inches long, with big spade-like front feet. Star-nosed moles favor wet spots here. Hairy-tailed moles prefer woods. Moles are insectivores, not rodents. They eat earthworms and grubs, not roots. The eastern mole is the one digging up lawns around Derry.
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.
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 Derry out to Londonderry and Salem show the same pattern. Look for fresh ridges and mounds after rain.
A year of moles in Derry.
- Spring: peak tunneling. Best time to trap. - Summer: highs near 82°F in Derry push moles deeper. - Fall: a second burst near the surface. - Winter: lows near 15°F in Derry. 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.
It's work up front, but it lasts for years. 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.
Lawn care that helps.
Grub control alone rarely moves moles on. Water deeply but less often. Constantly wet lawns draw earthworms, and moles follow. Healthy turf recovers from tunnels faster.
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.
In a front lawn or garden, most people want them gone. Moles loosen and aerate soil. They eat grubs and other insect larvae. A mole in a field may be fine to leave.
Fixing the lawn afterward.
Overseed bare spots in spring or fall. Wait until the mole is caught. Rake mounds flat and step ridges down. Water to settle the soil.
Moles, kids and pets.
Digging dogs can wreck a lawn faster than moles. Moles don't bite unless handled. Keep kids and pets away from traps. Baits must go deep in tunnels, exactly as the label says.
What a mole visit looks like.
They check traps every day or two. The tech walks the lawn and maps the tunnels. They test which runways are active. Traps go into the main runways.
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.
Across Derry, tunnels often run just under the surface, with deeper nesting chambers below, and a single mole can maintain an extensive system across a yard. Across Derry, because moles are solitary, several fresh ridges usually mean more than one animal. Across Derry, 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. Across Derry, 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
- Travel distance to rural properties.
- Per-mole pricing versus per-visit pricing.
- Number of moles present on the property.
- Irrigation and drainage corrections.
- Soil type: rocky or clay ground slows trap sets.
- Season, since spring and fall book fastest.
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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 Derry
In Derry's neighborhoods, irrigated lawns and garden beds are favorite spots. Across Derry, the humid continental climate means moles activity tends to follow spring and fall; active year-round in mild soil, so scheduling the visit before the busy stretch usually means a faster response and a cleaner quote. With about 44 inches of rain a year, Derry keeps soil soft and full of earthworms, which moles love. Winter lows near 15°F in Derry freeze the ground, so moles go deeper until spring.
Local research
Moles in Derry, NH: what the public record shows
Before you compare quotes, it helps to know which moles actually live in New Hampshire, when they are busiest around Derry, and what the state figures look like. Everything below links to the agency or university page it came from.
Mole species recorded in New Hampshire
- Star-nosed mole (Condylura cristata) — Northeast and Great Lakes; wet soils; up to 7 young.
- Hairy-tailed mole (Parascalops breweri) — Northeastern uplands.
When moles are busiest around Derry
Moles remain active all year; mounds appear right after snowmelt and activity subsides as the ground dries in late spring.
UNH Extension recommends trapping in an active runway as the only practical control, and says peaceful coexistence is often the best strategy since mole activity subsides as soil dries.
Rules that apply in New Hampshire
Sources: University of New Hampshire Cooperative Extension, Family, Home & Garden Education Center; 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 saliva paralyzes earthworms for later storage
Moles can tunnel quickly through soft soil in soft soil
Questions people ask
Can I just flood the tunnels or fill them in?
It rarely works. Moles dig new tunnels or move a few feet away.
Do I need a permit to trap moles?
Rules vary by state. Ask a local company what's allowed in New Hampshire.
How long does professional mole control take?
Usually one to three weeks of regular trap checks.
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.
Are moles rodents?
They're insectivores, related to shrews. They eat earthworms and grubs, not plant roots. No.
Does chewing gum get rid of moles?
Moles feed on earthworms and grubs, not gum. Across Derry, time spent on folk remedies is better spent setting traps in the active runs. No. Across Derry, 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.
Do mole exterminators charge per mole?
Across Derry, per-animal pricing means the bill scales with how many are caught, while a flat-rate program covers the whole job regardless. Across Derry, ask which structure the provider uses, since the two can produce very different totals. Some do.
When are moles most active in Derry?
Spring and fall, especially after rain. Frozen winter ground sends them deep.
Are moles common in Derry?
Yes.
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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