Dave:
It is a good thing you had a first aid kit available to use. The gauze pads (3" x 3" IIRC) don't necessarily have to be the Avant brand. There are several ways to replace the gauze pads. First check your local pharmacy stores (Wal-Mart, Shopko etc) as they usually have a decent amount of first aid supplies. You might actually find the Avant gauze in these locations. A couple of other brands to look for are Johnson & Johnson (nu-gauze is similar), Kendall (Versalon is similar)and 3M brands (NexCare) You might have to buy a package of 20 or so, but sometimes a local independant pharmacy will sell individual packages. You might try Campmor or EMS for restocking supplies, or at least an idea of how to get a refill for your kit. Hope this helps you.

Take care,
Stargazer