I hate to be alarmist, but cat poop often contains oocysts of something nasty that can infect both cats and humans. I don't lie awake nights worrying about my raised beds that are also neighborhood cat boxes, but I do try a little bit to keep them out of my veggies.
Google "cat oocysts" or Toxoplasma gondii
http://www.cell.com/trends/par...
"The annual environmental deposit of cat feces in the US is 1.2 million tons."
"Toxoplasma gondii oocysts may remain viable for several years and thus accumulate."
Sometimes it seems like they're all in my recently-seeded raised beds.
