You're in luck if you want to go with Rimguard. There are dealers in your area. Just call the Rimguard toll free number to find the names/locations.
I'm, on the other hand, out of luck. No Rimguard dealers at all in CA according to the lady at Rimguard. Apparently, there's not much interest in the anti-freeze properties of Rimguard in CA since most farming is done in the Central and Southern valleys where freezing isn't a problem. And, evidently, the density advantage of Rimguard over water isn't a big swinger either in CA.
Looks like I'll be putting water and windshield washer fluid in the tires on my Mahindra 5525.