I made the mistake of trying to remember a common name of the local Pituophis. Make sure it is the local species/subspecies for your area. I don't know reputable dealers there but neighbors that don't like snakes in their yards can be a good source. I did a quick search and came up with californiaherps.com which had a color range maps for the Pacific Gopher snake.
I hope this helps, biological controls are always best!
