Step 1: Locate Active Runways
In order for mole and gopher bait to be effective, it should be placed directly into active runways/tunnels. To find active tunnels, you will need a strong stick, dowel, or piece of rebar approximately ½ inch in diameter.
- For moles: Find the main surface tunnels and poke a hole to expose them to the sunlight. Main runways will most likely be raised, fairly straight, and may be brown or grassless because of damage to the lawn. If the main surface tunnels aren’t obvious, you can find two molehills that are close together and start prodding the ground between them until you hit an area with less resistance where a tunnel connects the holes. Use a flag or something else to mark where you have made holes. After a day or two, return and check the holes. Holes that have been covered up are active runways, and those that have not been covered are no longer active.
- For gophers: Start by finding fresh gopher holes. New gopher holes will have loose dirt that is darker in color than that of older holes. Probe around the mounds to find the runways. Gopher tunnels can be 4-12 inches deep, so you may need to be firm in your probing. Make a hole in the gopher tunnels, and mark them with a flag. After a day or two, if the hole you made has been covered up, you are dealing with an active runway. If not, try to find fresher holes and do the same process.
Step 2: Bait Active Runways
Once you have established which tunnels are active runways, it is time to apply the bait. Using your stick or rod, poke a hole in all the active runways. Dig out the hole slightly if needed, but be careful not to collapse the tunnel. Use a long spoon or our convenient shaker bottle to apply the appropriate amount of Harris Dry Up Mole and Gopher Killer pellets to the tunnel.
Step 3: Seal the Runways
After the poison has been inserted into the main runways, carefully cover the holes with dirt, sod, or rocks. Try to avoid covering up the pellets. Monitor your yard for 5-7 days for any new signs of moles or gophers. If no new tunnels or holes appear, the pellets did their job. If you notice new activity, repeat the process and reapply the bait.
Harris Dry Up Mole and Gopher Killer pellets are weather resistant and should be applied directly to the underground burrow systems of moles and pocket gophers. Wear barrier laminate gloves when handling the poison, and follow all label directions. For more information on identifying, preventing, and controlling moles and gophers, see Moles and Gophers: The Ultimate Guide.