Well intended but poor communication. It took 4 weeks of multiple emails and voice messages to get a response. They seem knowledgeable and do a good job with the piggies but the process is long...
Orange County Cavy Haven
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Orange County Cavy Haven is a non-profit organization located in Fullerton, CA, that is committed to rehoming abandoned guinea pigs in Southern California. Founded in 2003, the organization operates with the support of unpaid volunteers, ensuring that all funds are directed towards the care and well-being of the guinea pigs.
In addition to rescuing guinea pigs from local shelters, Orange County Cavy Haven focuses on promoting proper cavy care and adoption within the community. They offer year-round adoption opportunities and actively engage in outreach efforts to educate the public about responsible pet ownership.
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Reviews

Tried to call today as I found 2 guinea pigs that were dumped in our park and I want to get them to a rescue. However, their phone number is no longer in service.