Carl Schwinke, VP for Grain Supply of Siemer Milling Co. solicited a clarification on the use of chlorpyrifos. On Feb 28, 2022, the EPA banned this product that is used as active ingredient of many insecticides (Lorsban, Dursban Pro, Cobalt, Govern, Lorsban Advanced, Warhawk), and as an insecticide (Storicide) used for the protection of small grains, corn, and soybeans. My report explained the process of this ban, provided information on other products that can be used to replace these products, informed on the residual presence if it is used after the ban date, presence on KY soils, and period of tolerances for different grains. This report was delivered to KY producers and provider of Siemer Milling by Mr. Schwinke. In addition, I wrote a report on the Kentucky Pest News blog for a broader audience (EPA Mandates the Phase-out of Chlorpyrifos after February 28, 2022).