DES MOINES -- Certificates expire annually on March 1 for commercial manure applicators. Confinement site certificates are viable for three years ending on Dec. 31, with a two-month grace period for renewals.

All applicators renewing certificates – commercial and confinement site -- need to complete, and pay fees prior to March 1 to avoid a $12.50 late fee. The late fee does not apply to new applicants. 

In-person training sessions continue through February 24 for commercial and February 28 for confinement site applicators.  Online training is an option if you are unable to attend a live workshop. Testing is also available at any local DNR Field Office.