Thankfully, gophers are not a problem for me. But since several of my gardening friends are constantly fighting against these little demons, I thought I would spread what I have learned from others. Gopher killing products are found in nurseries, big box stores, and hardware stores. The most common product is poison bait. The use of bait is discouraged because the secondary poisoning effect. If another animal eats the killed gopher, the dog, coyote, owl, or whatever, will be likewise poisoned. Probably the preferred gopher killer is the Black Box trap by Victor. There is a very effective You Tube video produced by Dirt Farmer Jay who demonstrates how to use this trap. He will also show you how to use a flare device that emits poisonous smoke. Still another method is to use propane gas. Run a hose from a propane tank into a gopher run and that will poison the gophers. I have also heard that it is effective to attach a hose to the exhaust of a riding mower and lead that into a run. I’m not sure if these last two are legal. But whatever your technique, I have sympathy for anyone with a gopher problem. They can do a devastating job on a garden you have worked so hard to create. I have included a picture of the Black Box.
P.S. You know, if you are planning raised beds, you might want to lay down hardware cloth first. This is a layer of wire mesh that has ½ in holes in it. That would at least keep gophers out of your box.