FILE - In this May 24, 2018, file photo provided by the U.S. Attorney's Office, trash scatters the ground found at an illegal marijuana grow site near Hayfork, Calif. Researchers and federal authorities are finding powerful and potentially lethal pesticides at nine of every 10 illegal marijuana farms in California this year. Federal and state officials on Tuesday, Aug. 28, 2018, announced the results of a summer-long crackdown prompted in part by new concern over the increase in the use of the highly toxic pesticide carbofuran. (Lauren Horwood/U.S. Attorney's Office via AP,File)
