Trapping is the most reliable way to get rid of moles in your yard. It doesn’t depend on poisons, doesn’t harm beneficial soil life, and works within two to three days when done correctly. The key is finding an active tunnel, choosing the right trap for your situation, and setting it properly. Here’s how to do each step.
Why Trapping Works Better Than Baits
Moles are insectivores, not rodents. Their diet consists mostly of earthworms, with some grubs mixed in. That means poison peanuts, grain baits, and other products marketed for “rodents and moles” are useless. Moles simply won’t eat seeds or alfalfa pellets. The one bait that has shown effectiveness is a synthetic worm laced with a poison called bromethalin, designed to mimic the smell and taste of real prey. But even that requires precise placement in an active tunnel, which brings you right back to the same skill set you need for trapping.
It’s also worth knowing that killing grubs won’t drive moles away. Even in grub-free lawns, moles thrive because earthworms, their primary food source, are always present. Treating your lawn with insecticides to eliminate grubs is both ineffective against moles and harmful to beneficial soil organisms and wildlife.
Find the Active Tunnels First
Moles create two types of tunnels. Surface runs are the raised ridges you see snaking across your lawn. Some of these are temporary feeding paths the mole used once and may never revisit. Deeper main tunnels sit about 8 to 12 inches underground and are roughly 2 inches in diameter. These are permanent highways the mole travels regularly, and they’re your best trapping locations.
You can test whether a surface tunnel is active using one of two methods:
- Tamp and watch. Press down short sections of raised tunnels with your foot. Check them daily and note which ones get pushed back up. A tunnel that’s re-raised within 24 to 48 hours is actively being used.
- Poke a hole. Use a stick to punch a small hole through the top of the tunnel. Wait 24 hours. If the hole has been repaired and plugged, that tunnel is active and worth trapping.
To find deeper tunnels, probe the soil between or next to fresh mounds using a pointed stick, metal rod, or gopher probe. When the probe suddenly drops through with little resistance, you’ve hit a burrow. These deeper runs are especially productive trapping sites because the mole uses them consistently.
Three Main Trap Types
Harpoon Traps
A harpoon trap sits above ground over a flattened section of tunnel. It has a U-shaped frame, a spring-loaded set of spikes, and a trigger plate that rests on the soil surface. When a mole pushes the dirt back up to reopen its tunnel, the trigger releases and the spikes plunge downward. These traps are effective, but the exposed spikes make them a poor choice for yards where children or pets play.
To set one, compress the spring by pulling the handle upward until the locking mechanism (called a “dog”) catches and holds the spring in place. Then flatten a short section of the active tunnel with your foot to create an obstruction. Position the trap so the spikes are directly over the flattened run, and press the trigger plate down firmly against the soil obstruction.
Scissor-Jaw Traps
Scissor-jaw traps work underground, with two sets of metal jaws that straddle the tunnel on either side. When the mole passes through and pushes against the trigger, the jaws snap shut. The most common brand is the Victor Out O’Sight. These traps are easy to monitor because a triggered trap visibly springs up above the soil surface.
To set a Victor-style scissor trap, squeeze the back of the jaws together to open them, then lift the trigger to lock the jaws in the open position. Keep your fingers away from the space between the jaws while doing this, reaching in from the side instead. Dig into the active tunnel just enough to lower the jaws into position on both sides of the run, then cover everything lightly so the mole doesn’t detect a disturbance.
An alternative scissor-style option, the Mole Eliminator, is slightly easier to set. You push the jaws down into the run, press on the top of the trap several times with your foot to clear dirt, then step down fully until it clicks open. The trigger automatically creates the obstruction inside the tunnel for you.
Choker Loop (In-Line) Traps
Unlike scissor traps that straddle the tunnel from above, choker loop traps sit directly inside the mole’s run. The Trapline Products mole trap is the most common version. A wire loop tightens around the mole as it passes through. These traps require more precise placement because they need to be aligned with the direction of travel inside the tunnel itself. Setting involves engaging a multi-part locking mechanism and winding a spring, so expect a bit of a learning curve compared to the other two styles.
Setting Traps for Best Results
Location matters more than trap type. Place traps in confirmed active tunnels, ideally in straight sections rather than curves or intersections. Straight runs give the mole less room to detour around the trap. For deeper tunnels, use scissor-jaw or choker loop traps since these work below ground. For shallow surface runs, harpoon traps are the simplest option.
After setting a trap, minimize disturbance to the area. Moles are sensitive to changes in their tunnels. Avoid stepping on nearby runs or leaving loose soil scattered around the trap site. Some trappers lightly cover scissor-jaw traps with a thin layer of soil or a piece of cardboard topped with dirt to block light from entering the tunnel, since light signals a cave-in and can cause the mole to reroute.
Check your traps every 24 hours. If a trap hasn’t caught anything within two to three days, the tunnel may not be as active as you thought. Move the trap to a different confirmed active run and reset. Successful trapping typically happens within that two-to-three-day window once you’ve placed the trap in the right spot.
Keeping Pets and Children Safe
Harpoon traps pose the most obvious risk because the spikes and spring mechanism are fully exposed above ground. If you have kids or dogs in the yard, scissor-jaw traps are a safer choice since the working parts sit below the soil surface. You can also place a bucket or crate upside down over any above-ground trap hardware, weighted with a brick, to prevent curious hands or paws from reaching it.
If you’re using worm-shaped poison baits instead of or alongside traps, cover every bait insertion hole with a piece of sod and something heavy like a brick or board. Monitor your pets and keep them away from treated areas. Store unused bait where children and animals can’t reach it.
Repellents and Barriers as Backup
Castor oil is the only repellent with any research support, and even then the results are modest. In one study, a castor oil product reduced mole activity in a treated area for about 30 days. To work at all, it needs to be thoroughly watered into the soil: irrigate with half an inch of water before applying, then follow up with at least an inch of water afterward. You can make your own concentrate by mixing 6 ounces of unrefined castor oil with 2 tablespoons of liquid dish detergent in a gallon of water, then diluting at 1 ounce per gallon for spraying. One gallon of diluted spray covers roughly 300 square feet. Granular castor oil products have shown less effectiveness than the liquid versions.
For small, high-value areas like garden beds or a specific section of lawn, physical barriers offer long-term protection. Bury 36-inch-wide strips of quarter-inch galvanized hardware cloth or aluminum sheeting to a depth of 24 to 30 inches, leaving about 6 inches extending above the soil surface. This is labor-intensive and impractical for an entire yard, but it can permanently protect a defined space.
Neither repellents nor barriers replace trapping for an active mole problem. They work best as a second line of defense after you’ve removed the moles already tunneling through your yard.