[royalarrival]

You are right in that you can lead a horse to water, but can not make it drink. I don't live in CA and don't know what kind of educational/assist programs they have available.
In our area, there are educational/assistant programs, but will admit promoting the programs to reach more of the population will help. Offering free spay and neuter to those that qualify will help. Currently they offer low cost spay and neuter programs.
Currently (in our area) you can adopted an intact dog with agreement that spay/neuter will be done. You have a certain amount of time to show vet papers stating procedure was completed. It leave a window of opportunity for a breeding. The man power is limited and follow-up are minimal. Spaying and neutering before the dog is adopted will solve that problem. Of course, taxpayers will be forced to pay the spay/neuter bill.

It is a vicious cycle.

I am on the fence with this law. The law does not effect me (PA). The law does set an example which could lead to other government bodies adopting the idea.