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 Walla Walla 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 Walla Walla 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
For Walla Walla homes, 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 is the method most extension services recommend for moles. Traps go over confirmed active runways. They're rechecked within a day or two. Traps that go untouched get moved to fresh Walla Walla runways.
- 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 Walla Walla: 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 Walla Walla.
- 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
Prices are typical published ranges. Ask what’s included before you compare quotes.
Raised ridges are feeding tunnels just under the turf. Many are used once and abandoned.Which moles live around Walla Walla.
Moles are insectivores, not rodents. They eat earthworms and grubs, not roots. Around Walla Walla, Townsend's, coast or broad-footed moles do the digging. They push up more mounds than eastern moles.
When they tunnel.
Mild winters keep them near the surface. Summer heat and drought also push them down.
Round, volcano-shaped mounds come from deeper mole tunnels. Gopher mounds are crescent-shaped with a plugged hole.Finding an active tunnel.
If it's raised again, it's active. Main runways often follow edges: walks, fences and beds. Around Walla Walla, edges along walks and beds are the best bets. 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.
A year of moles in Walla Walla.
- Fall: a second burst near the surface. - Winter: mild in Walla Walla. Moles stay active. - Spring: peak tunneling. Best time to trap. - Summer: highs near 90°F in Walla Walla push moles deeper.
Mole, gopher or vole?
- Vole: surface runways and small holes in the grass. - Damage: moles don’t eat plants; gophers and voles do. - Mole: raised ridges and round, volcano-like mounds. - Gopher: crescent-shaped mounds with a plugged hole.
What works, and what doesn’t.
- Rarely: castor oil, sonic stakes, gum or flooding. - Rarely alone: grub control, since they mostly eat earthworms. - Works: traps set in active runways. - Sometimes: labeled baits, used deep in tunnels.
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.
- Traps stay untouched for several checks. - New ridges? Another mole may have moved in. - No new mounds for two weeks. - Stepped-down runways stay flat.
Choosing a trap.
- Tunnel traps: sit inside a dug-out runway. - Placement: main runways beat fresh feeding ridges. - Rules: check what your state allows first. - Scissor traps: set straddling an active runway. - Harpoon traps: set on top of a pressed-down ridge.
Mole myths.
- 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. - Chewing gum in tunnels: no evidence it works. - Castor oil: may move them briefly, not away.
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?
- Gophers: crescent-shaped mounds with a plugged hole. - Chipmunks: small clean holes with no soil around them. - Moles: raised ridges and round, volcano-shaped mounds. - Voles: narrow surface runways through the grass.
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.
- How often will you check traps? - What if another mole moves in? - Is lawn repair included? - Is it a mole, gopher or vole? - Which method will you use?
Moles by the numbers.
For Walla Walla homes, because moles are solitary, several fresh ridges usually mean more than one animal. For Walla Walla homes, 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. For Walla Walla homes, moles do not eat plants; they tunnel for earthworms, grubs, and soil insects, and the ridges they leave behind are what most people notice. For Walla Walla homes, tunnels often run just under the surface, with deeper nesting chambers below, and a single mole can maintain an extensive system across a yard.
What affects the price
- Provider type: wildlife operator versus lawn company.
- Property bordering fields, woods, or streams.
- Irrigation and drainage corrections.
- Buried barriers for raised beds or gardens.
- Lot size and number of active runways.
- Seasonal monitoring plans versus one-time service.
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What bothers you most about moles?
When to call for help
A pro can usually catch the mole within a few visits. Call if new mounds keep appearing for more than a week. if you can't find an active runway.
What you can do yourself
Set the trap exactly as the instructions say. Trapping yourself can work. Skip sonic stakes, gum and flooding.
Moles in Walla Walla
Winters around Walla Walla are mild enough that moles can stay active near the surface. Around Walla Walla's open land, pastures and fields hold moles too. Walla Walla gets about 21 inches of rain a year, so moles favor watered lawns and shady beds.
Local research
Moles in Walla Walla, WA: what the public record shows
Before you compare quotes, it helps to know which moles actually live in Washington, when they are busiest around Walla Walla, and what the state figures look like. Everything below links to the agency or university page it came from.
Mole species recorded in Washington
- Townsend's mole (Scapanus townsendii) — Largest North American mole (8-9 inches); lawns west of the Cascades.
- Coast (Pacific) mole (Scapanus orarius) — Drier, brushier habitats including interior sagebrush.
- Shrew mole (Neurotrichus gibbsii) — Smallest North American mole; does not make molehills.
When moles are busiest around Walla Walla
Wet season west of the Cascades.
Moles are unclassified; owners may trap or kill them on their property when causing damage, within the trap law.
Rules that apply in Washington
Sources: Living with wildlife: Moles; 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?
Mole mounds have no hole; gopher mounds do
Mole saliva paralyzes earthworms for later storage
Questions people ask
Are moles rodents?
They're insectivores, related to shrews. They eat earthworms and grubs, not plant roots. No.
What is the difference between mole and gopher damage?
Moles push up round, volcano-like mounds and raised ridges. Gophers leave crescent-shaped mounds with a plugged hole to one side.
When is the best time to trap moles?
Spring and fall, when they're tunneling near the surface. Right after rain is ideal.
Will grub control get rid of moles?
Earthworms are their main food. Killing grubs alone usually doesn't move them on. Rarely.
What kind of traps do professionals use?
Usually scissor or harpoon traps set in active runways. They're the most reliable method.
Do ultrasonic mole repellers work?
For Walla Walla homes, moles have poor eyesight and live almost entirely underground, where airborne sound barely reaches them. For Walla Walla homes, if you try a sonic stake, watch for fresh ridges over two weeks; if activity continues, switch to traps in the active runs. No. For Walla Walla homes, there is no scientific evidence that ultrasonic or vibrating devices repel moles, and extension offices consistently advise against relying on them.
Is an annual mole control contract worth it?
Walla Walla households fit the wider pattern here: homeowners considering monthly service should weigh local quotes vary, so ask for a written estimate. It's a published estimate, not a local quote. It depends on how often moles return.
When are moles most active in Walla Walla?
Spring and fall, especially after rain. Mild winters keep some activity going year-round.
Are moles common in Walla Walla?
Yes.
Nearby cities
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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