While we can NEVER make our gardens perfectly free of pathogens that might harm humans, cat feces/urine seem especially 'iffy'. They carry an organism that can harm women of child-bearing age. Not a risk I care to take. How long the organism stays active in soils, I can't say, but saw a link [can't find it now] that detailed tests done on composted dog feces over a period of 2 years. Some organisms still active. Have you considered creating a separate composting 'pit' for cat waste ... populated with composting worms? If placed under a valued tree or shrub, would be a permanent source of compost wi/o the need to turn or even move and cut way down on chances of transmitting pathogens to humans.
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The link below is to vermicomposting blog. Click onto HOT TOPICS, scroll down to PET WASTE COMPOSTING.

Here is a link that might be useful: Red Worm Composting

Yes, Toxoplasmosis, which is not good for anyone whose immune system is not the strongest, which can mean any of us during time of sickness.

Moral of the story, keep away from Cat urine and feces, and teach your children to stay away from it since the parasite pierces and enters right through the skin.

The story apparently gets creapier than that. Here's a link with more info on toxoplasmosis

Here is a link that might be useful: aka

Separate little bin for kitty at our house.

I scoop out the poop and flush it. The soggy sawdust in the bottom of the pan goes to the compost heap.

Here's the REAL poop on toxoplasmosis:

http://www.petside.com/health/petvet/toxoplasmosis-feline.php In fact, the primary risk factors in the United States for acquiring toxoplasma infection are eating undercooked meat or ingesting contaminated water or soil. Animals become infected by ingesting tissue cysts (eating contaminated meat), ingesting oocysts (fecal-oral infection, like drinking contaminated water), or by congenital infection (infection across the placenta).

Most cats are infected congenitally or by hunting behavior soon after weaning.

Oocysts take 1-5 days to sporulate, or to become infective. Removing feces the day they are deposited in the box greatly decreases the unlikely possibility that any present oocysts could become infective.

1 - They can't spread it if they don't have it. Cats that are kept indoors are extremely unlikely to catch it. Cats from generations of indoors cats are extremely unlikely to have it.

2 - If they catch it, a cat's period of infectivity, when they are shedding the oocysts, is quite short, maybe a few months.

Here is a link that might be useful: Toxoplasmosis and World Cupo success