Trap and Dspose of Gophers
Purchase a trap system. Traps for gopher rats can be purchased at pet and hardware stores, or online at specialty websites. Read reviews to find those traps which work best. Two to three small traps should be enough to capture a gopher rat on the average home property.
Place the traps around your property. Gopher rats spend most of their time below ground and only surface at night. Traps must be placed where the gophers will find them. Putting a trap at in the middle of your yard will do no good so make sure to place the traps at the entrances and exits to the tunnel system.
Check your traps and dispose of the animals. Check your traps daily to avoid having to deal with rotting gophers. Call pest control to promptly and properly remove the carcass. If you have chosen to use live traps, you can take the gophers away from your home and release them into the wild.
Poison the gophers as an alternative. If trapping does not work, you can introduce a poisoned barley seed to their tunnel system. This is not recommended as other animals may ingest the poison and be harmed. There is the added risk of the gopher dying somewhere you cannot reach and decomposing.