Irvine quit using synthetic pesticides in 2016, now a farm bill could block such local restrictions
In the past three years, Irvine went from treating its parks and nature areas with more than 50 pounds and about 60 gallons of synthetic weed and pest killers annually, all the way down to zero. The city now uses organic products with ingredients such as corn gluten meal and oil from soybeans, lemongrass or…