At any time the board of supervisors, in its discretion, may decide that a county mosquito control program is not feasible or that the need therefor no longer exists, in such event, the board of supervisors by order spread upon its minutes may abolish the county mosquito control commission and terminate such mosquito control program. In the event any such commission is abolished, any funds on hand for the use of such program, shall be transferred to the general fund of the county.