As contraband Chinese pesticides contaminate marijuana farms across California, state officials have not issued warnings that the polluted drug could pose a fatal threat to the public. 

Chinese-labeled pesticides have been flagged on cannabis farms in at least six California counties, according to a Los Angeles Times investigation. After California agencies raided illegal cannabis-growing warehouses in Oakland last September, investigators discovered packets of profenofos and fenpropathrin, toxic pesticides that are fatal if inhaled. Earlier last year, state officials found the same poisonous substances during a raid on 25 illegal farms in Siskiyou County.