Spay Pit

How did offering free spays and neuters for pit bulls work in San Francisco? Seems that the free, but mandatory, fixes have really brought down the number of pit bulls the shelters have to euthanize.

Are there less pit bull puppies now, or just more careful breeders?

http://www.dogsbite.org/blog/2008/09/flashback-sf-pit-bull-sterilization-law.html