Maryland Code, Agriculture § 5-2A-02

(1) Pet care products used to mitigate fleas, mites, ticks, heartworms, or other animals that are harmful to the health of a domesticated animal;

(2) Personal care products used to mitigate lice and bedbugs; and

(3) Indoor pest control products used to mitigate insects indoors, including ant bait.

(b)(1) On or after January 1, 2018, a person may not sell at retail in the State a neonicotinoid pesticide unless the person also sells a restricted use pesticide.

(2) A person that sells a neonicotinoid pesticide under paragraph (1) of this subsection:

(1) A certified applicator or a person working under the supervision of a certified applicator;

(2) A farmer, or a person under the supervision of a farmer, who uses the pesticide for agricultural purposes, including crop production, livestock, poultry, equine, and noncrop agricultural fields; or

(3) A veterinarian.