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 Londonderry 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 Londonderry 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
Across Londonderry, a survey also looks at what is feeding the moles: soil moisture, worm density, and grub activity. Ridges along foundations, walks, and bed edges usually mark main runways. Mapping them first avoids traps in dead tunnels.
- Time
- 45–90 minutes
- Best for
- Every job; trapping fails without it
Active-Runway Trapping
$150–$400 per visit; multi-visit plans $300–$900
Trapping in Londonderry is a process rather than a one-time visit. Sets are checked, moved, and repeated until activity stops. Providers around Londonderry usually price this as a plan with a set number of visits.
- Time
- 30–60 minutes per visit, over several visits
- Best for
- Most yards; the most reliable method
Mole-Labeled Baits
$100–$300 per application
Bait labeling matters in Londonderry: 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 Londonderry.
- 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
Grub control is often sold as mole control, with real limits. Moles eat mostly earthworms, so a Londonderry lawn with no grubs can still host them. Across Londonderry, a provider should be honest that habitat work supports trapping rather than replacing it.
- Time
- 1–4 hours
- Best for
- Repeat problems; protecting beds and small areas
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 Londonderry.
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 Londonderry.
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 Londonderry out to Derry and Hudson show the same pattern. Look for fresh ridges and mounds after rain.
A year of moles in Londonderry.
- Spring: peak tunneling. Best time to trap. - Winter: lows near 15°F in Londonderry. Ground freezes; moles go deep. - Fall: a second burst near the surface. - Summer: highs near 82°F in Londonderry 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.
Raised beds can get a mesh floor before you fill them. 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.
Lawn care that helps.
Healthy turf recovers from tunnels faster. Constantly wet lawns draw earthworms, and moles follow. Water deeply but less often. Grub control alone rarely moves moles on.
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.
A mole in a field may be fine to leave. They eat grubs and other insect larvae. Moles loosen and aerate soil. In a front lawn or garden, most people want them gone.
Fixing the lawn afterward.
Water to settle the soil. Rake mounds flat and step ridges down. Wait until the mole is caught. Overseed bare spots in spring or fall.
Moles, kids and pets.
Baits must go deep in tunnels, exactly as the label says. Keep kids and pets away from traps. Moles don't bite unless handled. Digging dogs can wreck a lawn faster than moles.
What a mole visit looks like.
Traps go into the main runways. They test which runways are active. The tech walks the lawn and maps the tunnels. They check traps every day or two.
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.
Across Londonderry, 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 Londonderry, because moles are solitary, several fresh ridges usually mean more than one animal. Across Londonderry, 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 Londonderry, 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
- Mole-labeled bait applications added to trapping.
- Single visit versus a multi-visit trapping plan.
- Irrigation and drainage corrections.
- State rules that affect trap or bait choices.
- Soil type: rocky or clay ground slows trap sets.
- Buried barriers for raised beds or gardens.
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What bothers you most about moles?
When to call for help
if you can't find an active runway. A pro can usually catch the mole within a few visits. Call if new mounds keep appearing for more than a week.
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 Londonderry
In Londonderry's neighborhoods, irrigated lawns and garden beds are favorite spots. Winter lows near 15°F in Londonderry freeze the ground, so moles go deeper until spring. With about 44 inches of rain a year, Londonderry keeps soil soft and full of earthworms, which moles love.
Local research
Moles in Londonderry, 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 Londonderry, 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 Londonderry
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 mounds have no hole; gopher mounds do
One mole can hold a territory over an acre
Questions people ask
Will moles come back after they are removed?
New moles can move into empty tunnels. Catching newcomers early keeps damage small.
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.
Will grub control get rid of moles?
Killing grubs alone usually doesn't move them on. Earthworms are their main food. Rarely.
Can I just flood the tunnels or fill them in?
It rarely works. Moles dig new tunnels or move a few feet away.
What kind of traps do professionals use?
Usually scissor or harpoon traps set in active runways. They're the most reliable method.
Do homeowners prefer DIY mole trapping or hiring a pro?
Across Londonderry, many homeowners try trapping themselves first because it is the cheapest option and traps are sold everywhere. Across Londonderry, 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.
Do mole exterminators charge per mole?
Across Londonderry, ask which structure the provider uses, since the two can produce very different totals. Across Londonderry, per-animal pricing means the bill scales with how many are caught, while a flat-rate program covers the whole job regardless. Some do.
When are moles most active in Londonderry?
Spring and fall, especially after rain. Frozen winter ground sends them deep.
Are moles common in Londonderry?
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