Md. Code Ann., Agric. § 5-210.1

The Secretary may enter into reciprocal agreements with other states to provide that nonresident applicators or pest control consultants may be exempt from examination requirements under this subtitle if certified under equivalent plans of other states approved by the federal Environmental Protection Agency granting similar exemptions to residents of this State, upon payment of such fees as are required by Maryland applicators or pest control consultants and upon meeting any additional requirements that may be required in the agreement.