I got this coupon code in the mail with some check books that I ordered (custom printing, photos of my dogs, yay!). I’m super allergic to sulfur and cannot drink wine if I enjoy breathing so I’ve got no use for this. I don’t know if it’s any good or not. I don’t know if it’s single-use or not. I got 4 packages of checks and I only opened one, odds are there’s three more in the packages. If this turns out to be single use and is worthwhile I should be able to put up three more. I’m just posting it in case anybody would like to try using it. I got an Omaha Steaks coupon as well if anyone is interested.