Iowa Code § 200A.14: Exchange between producers.

Nothing in this chapter shall be construed to restrict or prohibit any of the following:

1. The distribution of a bulk product to importers, manufacturers, or manipulators who mix bulk dry animal nutrient products for distribution.

2. The shipment of a bulk product to a person licensed as a distributor pursuant to section 200A.5 who has registered the bulk product as provided in section 200A.6.