Authorities have found 770 meth labs in Ohio since October. The current fiscal year ends Sept. 30, but this year's total is up from 607 in 2012 and 375 in 2011. The state's crime lab started keeping statistics in 2005.
DeWine says 95 percent of the meth labs are so-called one-pot labs, where chemicals are mixed in soda or sports drink bottles. It's cheaper and less complicated.
He says agents from the crime lab teach community courses on identifying the signs of a meth lab.