I. Vouchers shall remain valid for 180 days from the date printed, after which the obligation of the VLT licensee to pay the patron any value remaining on a voucher expires. II. Before the end of each calendar month, the VLT licensee shall report and remit the total value of vouchers that expired during the preceding calendar month in a format prescribed by the commission. III. Such moneys shall become a part of the special fund established in RSA 284:21-j.