Minnesota law requires Commercial Animal Waste Technicians (CAWT) to obtain a state license. If you apply or manage manure on a for-hire basis, you must be licensed. There are two categories, solid and liquid. An open-book exam is required as part of the license application.
License Application (PDF: 88 KB / 1 page)
Licensed Commercial Animal Waste Technicians
Local Ordinances Regulating Livestock in Minnesota
Minnesota Department of Agriculture, 625 Robert Street N, St. Paul, MN 55155-2538, firstname.lastname@example.org