The registration for Chlorpyrifos (Lorsban) will likely be lost in a short period of time. This notice was written October 9, 2018. Chlorpyrifos is included in this guide as a single active ingredient and in combination with other active ingredients. Once this active ingredient is no longer registered, it will no longer be considered an option for managing insects. Follow all applicable laws regarding this active ingredient.
The LSU AgCenter and the LSU College of Agriculture