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Open Access Publications from the University of California

The status and use of Gophacide

  • Author(s): Richens, Voit B.
  • et al.

The organophosphate compound recently registered for pocket gopher control under the trade name Gophacide (DRC-714) is described and characterized according to mode of action, toxicity, and efficacy. Formulations on grain at 0.1% and 0.2% give good bait acceptance and achieve high mortality in field tests on all gopher species except the Mexican pocket gopher. It is superior to common rodenticides for gopher control, with less hazard to nontarget animals than some other rodenticides, and it has slower action and available antidotes. It shows promise for controlling meadow mice, house mice, kangaroo rats, and pine voles. While black-tailed jackrabbits are highly susceptible to the compound, it presents a secondary hazard to eagles and large hawks.

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