On Saturday morning, a homeowner walks across the lawn and finds three fresh piles of soil. A new raised ridge also runs near the fence. With damage appearing in several places, the obvious question is: are there several moles underground?
The answer is not that simple.
Yes, one mole can make multiple tunnels and molehills. The number of mounds or raised ridges does not reliably tell you how many moles are present. A more useful question is how many locations are showing current activity.
Table of Contents
- Can One Mole Really Make Multiple Tunnels and Molehills?
- Why Does One Mole Need a Whole Tunnel Network?
- Do More Molehills Mean More Moles?
- How Can You Identify Active Areas?
- Why Does One Mole Not Always Mean One Trap Location?
- When Should You Cover Multiple Locations?
- A Simple Action Plan
- Frequently Asked Questions
Can One Mole Really Make Multiple Tunnels and Molehills?
Yes. One mole can create many surface ridges, deeper runways, and molehills as it searches for food and expands its underground system.
Rutgers NJAES reports that moles can extend surface runways by about 100 feet in a day. This describes their potential digging ability. It does not mean every lawn will gain 100 feet of new tunnel every day, but it helps explain how one animal can leave signs across a surprisingly large area.
The important distinction is between the amount of visible activity and the number of animals. A fresh ridge, a new mound, and another damaged patch may all connect to the same underground network.
Why Does One Mole Need a Whole Tunnel Network?
A mole tunnel system is not one straight passage. It includes routes used for feeding, regular travel, and moving excavated soil to the surface.
| Tunnel type | What it looks like | How it is used |
|---|---|---|
| Shallow runs | Raised ridges under the turf | Feeding near grass roots; some reused, others abandoned after one pass |
| Deep runs | Not visible at surface | Stable travel connecting nests, feeding areas, and frequently used routes |
| Molehills | Circular piles of loose soil | Soil pushed up during deeper excavation; not separate addresses for separate moles |
This is why several mounds and ridges can come from one animal working in different parts of the same system.
Do More Molehills Mean More Moles?
No. More molehills show more excavation, not a reliable headcount.
Rutgers NJAES notes that an acre of turf generally supports only two to three moles at the same time. That figure should not be converted into a fixed estimate for every backyard. Yard size, food supply, soil conditions, surrounding woods or fields, and connected tunnel systems can all affect what is happening underground.
Moles are usually solitary, but solitary does not mean that every animal has a completely isolated system. Rutgers also explains that connected main runways may be shared by several moles. They may use the same route at different times.
For that reason, none of these assumptions is dependable:
- one molehill equals one mole;
- one raised tunnel equals one mole; or
- catching one mole proves the entire network is inactive.
How Can You Identify Active Areas?
Instead of trying to count animals underground, divide the lawn into areas that need to be tested.
- Mark the newest signs. Note fresh molehills and recently raised ridges. Do not count old damage that may have been present for weeks or months.
- Look for connections. Ridges running in the same direction, joining one another, or following the same fence or walkway may belong to one network.
- Choose representative test points. Press down a short section of several likely runs and mark each location.
- Check again in about 24 hours. University of Minnesota Extension recommends checking whether the mole raises the compressed soil or turf again.
- Compare activity across the yard. If widely separated areas show renewed activity at the same time, continue treating them as separate candidate zones. This still does not produce an exact mole count.
The goal is not to assign a number to each mole. It is to find the locations that deserve further testing or trap coverage. For a closer look at the testing process, see How to Find Active Mole Tunnels.
Why Does One Mole Not Always Mean One Trap Location?
Even if one mole caused all the visible damage, it may still move through several possible runs.
The practical problem is not only how many moles are present. It is also which tunnel the animal will use next. If several tested runs are rising again, placing one trap in only one of them means depending on the first tunnel choice being correct.
Multiple set points address uncertainty about location. They do not assume that one trap is needed for every animal.
Before setting, remember that a molehill is a clue rather than an automatic trap location. The article Should You Set a Mole Trap on a Molehill or a Raised Tunnel? explains how to move from a visible mound to a more useful runway.
When Should You Cover Multiple Locations?
Confirm activity first, then choose coverage based on the number of useful candidate locations.
- If only one main run rises again and provides a stable set point, focus on that location first.
- If several separated candidate runs show renewed activity, covering them at the same time can reduce dependence on one tunnel choice.
- If many ridges are visible but none have been tested, test first. Do not place traps on every old surface mark.
- If roots, stones, or loose soil prevent stable installation, move along the same active run to a clearer section.
This is where the POLAFLEX Jagged Mole Trap 4-Pack fits a yard with several candidate locations. Four traps can cover multiple confirmed or highly likely active runs at the same time, reducing the risk of placing all your confidence in one tunnel. The jagged jaws also provide a physical gripping structure that differs from the smooth-jaw design, combining broader location coverage with a distinct jaw configuration.
A Simple Action Plan
When several molehills and tunnels appear:
- Do not estimate mole numbers from the number of molehills.
- Separate old signs from fresh activity.
- Look for connected tunnel patterns.
- Press and mark several representative test points.
- Check which locations rise again in about 24 hours.
- Choose single-point or multiple-point coverage based on active candidate locations.
- Keep monitoring until new activity stops appearing.
Count active locations, not molehills and not guessed animals.
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