Hey Ben, I called REI and they forwarded me to the business who services their gear (or at least does the cleaning). I spoke with them, they're in Highland Park, and they do cleaning, repair and alterations. I decided to let them handle the bag, they can turn around within a week.
6916 N Figueroa St Los Angeles, CA 90042
323 - 256 - 0723
On the Poison Oak note: this is my 6th exposure and I can attest to the truth that it gets worse and worse with each round. Half the circumference of my thigh, from groin to knee is a nearly solid surface of rash and weeping boils, with large sections along my calf and shin. There's a few minor outbreaks elsewhere. My left forearm has a 1"x10" patch. I surrendered today, after 5 days, and took my first dose of Prednisone. Though I really wanted to avoid it.
I can imagine the real possibilities of taking small doses of the young plant, or this other extract mentioned, and acquiring a level of temporary immunity. But at my level of susceptibility, the idea of ingesting it scares the crap out of me.
Thanks everyone, for your kind thoughts and advice.
Oh, and thanks Rick, I warned the cleaner about the poison oak.