Good luck even finding them in the first place. As far as I'm aware, the only "proof" of Odontomachus in CA is a personal report from G.C. Snelling that was very close to the border of Arizona. However, no specimens were collected or images taken to back up this claim, and looking at the documented distribution of the western Odontomachus species, the only record with a reasonable distance from California is a single O. clarus record in Baja California, which is closer to the Mexican border rather than the Arizonan one, which doesn't line up with the description Snelling gave for the population he found. If any keeper in Cali does find Odontomachus in-state, the main priority should be collecting and preserving specimens for proper documentation rather than catching a queen to keep.