Thank you for your replies, everyone. I did contact the company but I noticed this after business hours and was hoping for a reply here that might have helped me make the case useable last evening. I ended up putting a blanket down in the back of the minivan and taking the bass, sans case, to a rehearsal. We all survived.
Here is the response I received from the company, which does not recommend the washing several here have said is OK:
* Begin forwarded message *
Steve:
Unfortunately the best advice I can give you is to visit a PetCo or large Pet Supply and try and find a topical order remover. The bag should not be dry cleaning or immersed in a washing machine. The dry cleaning fluid will only seal in the catpee odor and the washing machine will basically destroy the bag and render it water logged and hard to dry. The material we use is water resistant but not waterproof.
Topical cleansing without soaking is your best bet.
Good luck and best regards.
Peter Hoffman
Mooradian Cover Co.
* End forwarded message *
I found a local craigslist add for a bass that includes a gig bag, a stand, a few other things I want, so I may just buy that whole package later today or over the weekend, have myself a spare gig bag and a spare bass at least for a while, and then take my time deciding what to do with my original bag.
The best ides is putting the cat in the dryer!
-S-