Des Moines, IA – Iowa's governor says the state's new anti-meth legislation is producing positive results. Governor Tom Vilsack says the number of clandestine meth labs found across the state during the last three months is down 75%. That includes a nearly 90% drop in July, according to preliminary reports. Vilsack says the measure allows more law enforcement resources to be used for local security. Iowa's law is considered the toughest in the nation. Keokuk Police Chief RL Dobson says the number of meth labs in Lee County is also down during that time.