Gopher Control in Merrimack, NH

What to look for

Gophers get blamed for a lot of digging. Around Merrimack, it's almost always something else. Moles push up round mounds and ridges. Voles chew runways through the grass and eat plants.

• 1Round, volcano-shaped mounds (moles).
• 2Raised ridges in the lawn (moles).
• 3Surface runways in the grass (voles).
• 4Small holes near walls and patios (chipmunks).
• 5Plants chewed at the base (voles).
• 6Spongy ground underfoot (moles).

Treatment options and typical costs

Prices are typical published ranges. Ask what’s included before you compare quotes.

What's really digging around Merrimack.

Eastern moles cause most lawn tunnels here. Meadow and pine voles eat plants and leave narrow runways. Chipmunks dig neat holes near patios and walls. Getting the ID right in Merrimack saves money and time.

When they dig.

Summer heat and dry soil push activity deeper. Digging peaks in spring and fall, when soil is moist. Frozen ground slows surface work in winter.

Telling the diggers apart.

Neat holes with no dirt pile often mean chipmunks. Yards from Merrimack out to Bedford and Nashua share the same pattern. Look at the mound shape first. Round and volcano-like means a mole. Narrow runways in the grass mean voles.

A year of digging in Merrimack.

• Summer: highs near 83°F in Merrimack push activity deeper. - Fall: a second peak before winter. - Winter: lows near 15°F in Merrimack. Surface work slows. - Spring: peak digging as soil warms and stays moist.

Gopher, mole or vole?

• Mole: round mounds and raised ridges. - Vole: surface runways and chewed plant stems. - Chipmunk: neat holes, no dirt pile. - Gopher: fan-shaped mounds, plugged hole to one side.

Protecting gardens and trees.

• Trees: plant in wire root baskets. - Bulbs: use small wire cages. - Drip lines: check for chew marks each spring. - Raised beds: line the bottom with hardware cloth.

What works, and what doesn’t.

• Sometimes: labeled baits placed deep in tunnels. - Rarely: sonic stakes, gum, castor oil or flooding. - Rarely: plants said to repel gophers. - Works: traps in the main tunnel.

What helps with moles, voles and chipmunks.

• Voles: mow tall grass and clear mulch from plant stems. - Chipmunks: seal gaps under patios and steps. - All three: wire mesh under beds and around bulbs. - Skip: poisons near pets and wildlife. - Moles: traps set in active runways.

Lawn care that discourages diggers.

Pull mulch back from tree trunks. Healthy turf recovers from digging faster. Water deeply but less often. Keep weedy edges and tall grass mowed.

Fixing the yard afterward.

Water to settle the soil. Reseed or patch bare spots in spring or fall. Wait until the digging stops. Rake mounds flat and fill sunken tunnels.

Irrigation lines and sprinklers.

Bury lines a little deeper where you can. Fix leaks fast, since damp soil draws more digging. Gophers chew drip lines and sprinkler tubing. Check for wet spots or weak spray each spring.

Natural help.

Bait can harm pets and wildlife if misused. Traps avoid that risk. Owls, hawks, snakes and foxes all hunt gophers and voles. Barn owl boxes can help on bigger properties.

Myths about yard diggers.

• Car exhaust or flooding: unsafe and unreliable. - Sonic stakes: animals get used to them. - Repellent plants: little proof of results. - Many mounds, many animals: often it’s one. - Gum or laxatives: no evidence they work.

Signs the problem is over.

• Plants stop wilting or disappearing. - Flattened mounds stay flat. - New mounds later? Another one moved in. - No fresh mounds for two weeks.

Underground wire baskets.

Baskets last several years, long enough for roots to get established. Plant new trees, roses and bulbs in baskets of galvanized wire. Leave a few inches of wire above the soil.

Raised beds that stay safe.

• Wire: half-inch mesh, not chicken wire. - Edges: run the wire up the inside walls. - Soil: fill after the wire is in place. - Base: staple hardware cloth across the bottom.

When a whole street has them.

Talking with neighbors and treating at the same time works better. Diggers move in from vacant lots, fields and neighbors' yards. Clearing your yard alone may only last a season.

Pets, kids and digging.

Fill old mounds so no one twists an ankle. Keep kids and pets away from traps and bait. Choose traps over bait if a dog likes to dig.

Gopher-proofing new landscaping.

Raised beds with mesh bottoms protect vegetables. It costs more up front but saves replanting. Lay wire mesh under new sod before it goes down. Plant shrubs and trees in wire baskets.

Questions to ask before you sign.

• Which method will you use? - How often will you check? - What if another one moves in? - Is it safe around pets? - Is it a gopher, mole or vole?

How to size up the yard damage.

In Merrimack, state wildlife agencies put a single pocket gopher at roughly a ton of soil moved per year, and mounds are the first thing most people notice. In Merrimack, tunnel systems typically run 6 to 12 inches below the surface, with deeper nesting and food-storage chambers. In Merrimack, because each gopher is solitary, a yard with several fresh mounds usually means several animals, each with its own network. In Merrimack, count the active mounds during your walk-through — that number, not a national average, is what should drive a treatment plan.

Simple ways to keep gophers away

• Identify the digger before treating.
• Line raised beds with wire mesh.
• Protect bulbs with wire baskets.
• Keep grass mowed to discourage voles.
• Clear brush where chipmunks hide.

Questions people ask

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