Zep Essup, they still did up until a year or two ago. I'm not sure if they still do now. DIED got his Gams from the County of El Dorado. Out here UC Davis is pushing toward using Sacramento Perch as a mosquito deterrent for Northern California. They are native to Northern California and supposedly eat far more mosquito larvae that do Gams.

JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)