Miss. Code Ann. § 41-27-25: Miss. Code Ann. § 41-27-25

On or before the first day of each month following such agreement, and as long as the agreement remains in effect, the county mosquito control commission for each of the counties in such joint agreement shall meet and approve and allow for payment of all expenses, including salaries, labor, material, and the like to be paid by the county in which the work for such claims was done or performed and for which such materials were purchased during the month. The claims so approved for payment shall be entered upon the minutes of such county mosquito control commission and a copy thereof, certified by either the president or secretary of such county mosquito control commission, shall be mailed to the clerk of the board of supervisors of the county for which such county mosquito control commission was appointed, and a copy thereof mailed to the president of the board of supervisors and the president of the county mosquito control commission appointed and acting for the other counties in said agreement.