Cats are fine, it is their feces to be concerned with cats can have toxoplasmosis in their stool, but if the only thing your cat ever ate was comercial cat food the don't woryy, if your cat eats raw meat, or goes outside and possibly eats birds/mice then you should have someone else change the cat litter. You can also get toxoplasmosis from eating poorly cook pork, and probably other poorly cooked meats.