Mandatory neutering laws will not decrease the number of animals killed in shelters. The people who dump animals dump them even faster when faced with mandatory laws, high fees and fines. San Mateo Calif had an MSN law that was such a disaster they rescinded the law not too long ago. Los Angeles County has passed a mandatory Spay Neuter law and so has Palm Beach County Florida, they are already having problems in both places. A new Class Action Law Suit was just filed in LA County. Mandatory Spay Neuter ordinances are unworkable, expensive and unenforceable. There are better ways to control the pet population, but it takes the cooperation of the entire population.