STATE REGISTRATIONS AS OF 2/15/2023. Please go to our web site for daily updates. There is no nationally accepted format for registering fertilizers and soil amendments. As an example, South Dakota requires lab tests for registrations to be done on South Dakota soils! Same goes for soil amendments in South Carolina. North Carolina does not recognize vitamins as a soil amendment. Ecological Laboratories, Inc. takes every precaution not to ship products into states where they are not registered. Every invoice has a footnote next to every item where it may not be sold or distributed. We expect our distributors to take the same precautions.