Officials are turning to a fish-killing chemical to try to rid a San Francisco lake of invasive species.
The San Francisco Chronicle reports that the Presidio Trust will apply rotenone at Mountain Lake in November in an effort to kill alien carp, bass, sturgeon and fingerlings.
The goal is to make room for the introduction of native species.
The decision to use rotenone comes after three years of netting, trapping, electric stunning and hand capturing failed to empty the lake of the alien fish species.
Rotenone is a plant-based chemical that is widely used to rid lakes of alien fish. Officials say all traces of the chemical disappear from water in less than three days.
Copyright AP - Associated Press
