Md. Code, Agriculture § 5–405.1

(a) Except as provided in subsection (b) of this section, at least 24 hours before the State, a county, or a bicounty agency sprays a pesticide to control mosquitos within a municipality, the State, county, or bicounty agency shall provide to the municipality notification of:

(1) The location of the spraying; and

(2) The planned date and time of the spraying.

(b) If the State, a county, or a bicounty agency determines that spraying a pesticide is necessary to control the outbreak of a virus, contagion, or similar public health threat, the State, county, or bicounty agency shall provide the notification required under subsection (a) of this section to the municipality as soon as practicable.