Gopher Poison & Bait: Why It's Dangerous and What to Use Instead

Gopher poison and rodenticide bait are the most commonly used methods for gopher control — but they carry serious risks to pets, children, and local wildlife. If you're dealing with gophers in your Southern California yard, here's what you need to know before reaching for bait.

How Gopher Bait Works

Most commercial gopher bait contains one of two active ingredients: zinc phosphide or anticoagulant rodenticides such as diphacinone or chlorophacinone. These are placed inside gopher tunnels in bait stations, where gophers eat them and die underground or aboveground.

Zinc phosphide reacts with moisture and stomach acid to produce phosphine gas, killing the gopher quickly. Anticoagulants prevent blood clotting, causing internal hemorrhaging over several days.

The Risks of Gopher Poison

• Pet poisoning: Dogs and cats can dig up bait stations or eat poisoned gophers (secondary poisoning). Both scenarios are potentially fatal.
• Secondary poisoning: Raptors, owls, foxes, and coyotes that eat poisoned gophers can be killed by the rodenticide remaining in the gopher's body.
• Soil contamination: Anticoagulant rodenticides persist in soil and can leach into groundwater.
• Children: Bright-colored bait pellets can look appealing to young children who may eat them.
• Non-target rodents: Ground squirrels, mice, and other animals can eat bait intended for gophers.

Is Gopher Bait Legal in California?

Most rodenticide baits are restricted in California for residential use. Second-generation anticoagulant rodenticides (SGARs) such as brodifacoum, bromadiolone, and difethialone are banned from most residential and commercial use under California law (AB 1788). First-generation anticoagulants and zinc phosphide remain available but require careful handling.

Many homeowners unknowingly purchase bait products that are restricted or require a pest control license to apply legally.

The Safe Alternative: Mechanical Trapping

Chemical-free gopher trapping uses professional-grade mechanical traps set inside active tunnel systems. No bait, no toxins, no risk to pets or wildlife. A licensed technician locates the tunnel network using a probe, sets traps, and removes gophers without any chemical entering the yard.

Gopher Guys has used only mechanical trapping since 2003. It's more labor-intensive than bait but it's the only method that is 100% safe for pets, children, and the surrounding environment.

Gopher Guys serves all of Southern California including Los Angeles County, Orange County, Riverside County, and San Bernardino County.