If your Indianola lawn has developed raised ridges pushing up through the grass, soft spongy spots underfoot, and distinctive volcano-shaped mounds of pushed-up soil, you have moles. These underground mammals are common across central Iowa — and they can transform a well-maintained lawn into a rutted, uneven mess in a matter of days. A single mole can excavate up to 100 feet of new tunnels per day. They don’t stop when you ignore them; they just keep digging.

One important thing to understand about moles: they don’t eat your plants. Moles are insectivores — they feed almost exclusively on earthworms, grubs, and other soil invertebrates. The damage they cause is purely structural. Tunneling severs grass roots and disrupts soil contact, killing turf along runway paths. Mounds and tunnels create uneven surfaces that are hazardous to walk on and difficult to mow. And mole activity is relentless — they’re active year-round, though surface evidence is most pronounced in spring and fall when moist soil makes digging easy.

Miller Pest Solutions has been solving mole problems in central Iowa since 2001. We use professional targeted baiting methods that produce real results — not the repellents and home remedies that simply don’t work.

Signs of a Mole Infestation

  • Raised surface tunnels (runways) — the most visible sign of mole activity. These are ridges of pushed-up soil running across the lawn in irregular, winding patterns, typically an inch or two above the surrounding lawn surface. They follow no particular logic — moles dig where earthworms are, which varies with soil moisture and depth.
  • Volcano-shaped soil mounds — distinct from gopher mounds (which are fan-shaped and pushed to one side), mole mounds are roughly symmetrical piles with a plug near the center. They’re the exit points for deeper tunnels below.
  • Soft, spongy ground when walking across the lawn — shallow tunnels compress underfoot, creating an uneven, unstable surface. In spring, these can be trip hazards on otherwise flat lawns.
  • Dead grass patches along tunnel routes — tunneling severs root systems and creates air pockets that dry out grass roots, resulting in brown patches and dying turf along the tunnel path
  • Rapid tunnel expansion after rain — moles are most active in spring and fall when soil moisture is ideal. After a good rain, new tunneling activity can appear overnight across areas of the lawn that appeared undisturbed the day before.

Why Moles Are Common in Indianola

Indianola is the Warren County seat, about 15 miles south of Des Moines in Warren County. Central Iowa’s rich, loamy topsoil is precisely the habitat eastern moles thrive in — it’s easy to excavate, retains moisture well, and supports high earthworm populations year-round. Well-irrigated, fertilized suburban lawns with healthy soil actually attract more moles, because they support more earthworms than dry, compacted lawns. In other words, a healthy lawn is an attractive lawn from a mole’s perspective.

Indianola’s mix of town lots, older housing stock, and rural-edge properties makes it a hotspot for just about every pest you’d find in central Iowa — from carpenter ants in aging wood structures to moles in well-watered suburban lawns. Mole activity is visible throughout the year in Iowa but peaks in spring (March–May) and again in fall (September–October) when soil temperatures and moisture are optimal for digging close to the surface. In summer heat, moles dig deeper to follow moisture and earthworms, making their tunnels less visible — but they’re still present and still causing damage underground.

One mole per yard is actually typical. Moles are solitary and territorial, meaning a lawn with extensive tunnel systems usually has just one to three moles responsible for all of it. That’s both encouraging and important — professional control methods don’t need to address a large population, just the resident individual(s).

Our Mole Control Process

We use targeted baiting. Our technicians inspect the lawn, map the tunnel network, and identify active runways before placing bait where mole activity is current. That focused approach avoids treating inactive tunnels and concentrates service where it can make a difference.

For customers on an ongoing service program, we can also apply preventive lawn treatment during regular visits to help make treated areas less attractive to moles and discourage new activity. We monitor for fresh tunnels, review the results with you, and adjust the approach when activity changes.

For properties with continuing pressure from adjacent field edges, we can discuss a seasonal monitoring and management program that catches new activity early before it spreads across the lawn.

Why Choose Miller Pest Solutions

In business since 2001, QualityPro Certified, NPMA member. Joel Miller has been personally handling mole problems in central Iowa since 2007. We provide free phone bids so you know cost and approach before we come out. Honest service — if the activity pattern on your lawn suggests a single mole, we’ll tell you that and price the job accordingly.

Get a Free Phone Bid Today

Stop watching your lawn get torn apart one tunnel at a time. Call Miller Pest Solutions at (515) 329-8801 or visit millerthekiller.com for a free phone bid. We serve Indianola, IA and the greater Des Moines area.