Just opened the small refund from my DC taxes. It's smartly packaged. I had to fold four or five tabs, tear of four separate pieces of paper, and finally unfold the papers, find the check, fold it back, and tear it out, too. My guess is a good 15% of recipients accidentally tear the refund in half, and a couple more just give up on opening the thing altogether. The checks are void 180 days after the date of their issuance, so this probably saves DC quite a bit of money.