How to Get Rid of Gophers | Trap & Bait Tactics That Work

Getting rid of gophers requires trapping inside active tunnels or placing toxic bait directly into their burrows, with repellents and fences serving only as secondary barriers.

One afternoon you step onto a lawn that was perfect yesterday, and now it is dotted with crescent-shaped dirt mounds. The gopher has arrived. Repellents and noise makers get all the attention online, but the methods that actually end the problem are simpler and more direct. The tools you need fit in one hand, and the window to act is short — fresh mounds mean the gopher is still working below. Here is the exact sequence that works.

How To Locate the Active Tunnel

Gophers push up fan-shaped mounds, always plugging the tunnel entrance from the side. The main run sits between 4 and 12 inches deep, and finding it is the difference between an empty trap and a dead gopher. Probe around the freshest mound with a long screwdriver or metal rod — a sudden drop in resistance means you have hit the tunnel. Open the top with a hori-hori knife or trowel and verify at least 6 inches of straight run in both directions before setting any trap.

Setting Traps: The Protocol That Catches Every Time

Pincher traps are the standard for straight tunnels, and the setup routine is the same for all of them.

• Expose two openings in the tunnel so you can set one trap facing each direction. Gophers travel both ways inside their runs.
• Clear the dirt from the tunnel floor so the trap fits flush. Hold the trap by the string end and push the metal square forward with your thumb to keep the trigger wire in position.
• Insert one trap into each opening. Anchor the opposite end of each trap with a heavy string tied to a stake driven into the ground. This stops the gopher from dragging the trap deeper and makes retrieval simple.
• Set a minimum of four traps. Gophers are territorial and a single animal rarely visits every opening on the same day.
• Cover the openings with sod, landscape cloth, or cardboard. Light entering the tunnel causes gophers to push dirt into the trap, which springs it harmlessly.

Check traps the next day. If every trap is empty, move them to a different fresh mound within 48 hours. Used tunnels become part of the gopher’s regular patrol, so persistence pays within a few days.

When you catch one, shake the gopher into a plastic bag, double-bag it, and put it in the trash. Always wear gloves when handling the carcass.

Bait Placement: Where the Poison Actually Works

Zinc phosphide and strychnine are the active ingredients in the most effective gopher baits. The critical detail is placement — the bait must go inside the tunnel, not at the mound opening. Dropping bait at the mound entrance exposes pets, birds, and other wildlife to the poison without ever reaching the gopher.

Use a probe with a bait applicator or a funnel and spoon to push grain-based bait (typically sorghum or milo) deep into the tunnel. Follow the label instructions exactly — the label is the law, and the safety margins for your dogs and kids depend on it.

Repellents and Barriers: What They Can and Cannot Do

Castor oil granules, peppermint oil, and Tabasco sauce make spots unpleasant for gophers, but they do not kill or remove the animal. If your lawn is bordered by fields or a neighbor’s yard, a gopher chased off one area simply tunnels fifty feet away. Repellents work as a short-term deterrent around garden beds where you cannot use traps or bait, but they will not solve an active infestation alone.

Physical barriers stop gophers from entering a protected area permanently. Dig a trench around the garden bed or young trees and install 1/2-inch mesh hardware cloth. The fencing must go 1 to 2 feet deep, with at least 1 foot above ground. Bend the bottom 90 degrees away from the plants before burying it — this stops gophers from tunneling under the edge. Secure the mesh with two staples per foot.

Fumigants and Smoke Bombs

Smoke bombs and gas cartridges kill gophers by filling the tunnel system with toxic gas. They are less efficient than traps because gophers quickly seal off sections of their tunnels when they sense smoke. If you use a fumigant, block every exit you can find, light the cartridge, and drop it into the main tunnel. Cover the entrance immediately. The success rate depends entirely on whether the tunnel system is isolated enough to hold the gas.

Trapping vs. Baiting: Which One Fits Your Situation?

Common Mistakes That Let Gophers Win

Setting traps on old mound hits is the most frequent error. A mound that is dry or a week old likely belongs to an abandoned tunnel. Focus every trap on the freshest dirt you can find — damp, loose, and still fan-shaped. Second, never let light get through the cover. A pinhole-sized crack lets in enough light to make the gopher plug the tunnel with dirt before it reaches your trap. Third, do not stop after one catch. Gophers do not share territory, but a single acre can host multiple animals. Keep trapping until no new mounds appear for at least two weeks.

Your Gopher Control Checklist

Closer sections with the sequence that ends the problem in one week:

1. Identify the three freshest mounds on the property.
2. Probe each mound with a rod until you hit the main tunnel.
3. Open the tunnel and set four pincher traps facing both directions.
4. Cover all openings completely. No light escapes.
5. Check traps 24 hours later. Remove the carcass and reset any sprung traps.
6. If nothing was caught, move all traps to new fresh mounds.
7. After two consecutive days with no catch and no new mounds, bait the remaining tunnels with zinc phosphide bait as insurance.
8. Plan for one more round of traps if fresh mounds appear after a rain.