Mosquito Spray Increases Toxicity Of Pyrethroids In Creek, Study Finds

... A relatively benign compound contained in a widely used group of insecticides can mix with and increase the toxicity of existing pesticides in the environment, according to a new study led by biologists at the University of California, Berkeley.While the increase in toxicity was relatively modest, the effects from the interaction of chemicals were unexpected, the researchers said. [click link for full article] ...