trial court may also enforce all orders assessing any fine remaining in default by contempt upon a finding by the court that the defendant has the present ability to pay the fine and willfully refuses to pay. Costs and litigation taxes due may be collected in the same manner as a judgment in a civil action, but shall not be deemed part of the penalty, and no person shall be imprisoned under this section in default of payment of costs or litigation taxes. The following shall be the allocation formula for moneys paid into court: the first moneys paid in any case shall first be credited toward payment of litigation taxes and once litigation taxes have been paid, the next moneys shall be credited toward payment of costs; then additional moneys shall be credited toward payment of the fine.

a garnishment, the sheriff, any deputy sheriff or constable shall cause such distress warrant to be entered on the docket of any court of general sessions or circuit court of the county, and the procedure in the execution of such garnishment shall be the same as now provided by the statute for the execution of garnishments in civil cases.