When it comes to children getting covered in animal crap and suffering from toxicara, then yes, burying the crap does make a hell of a big difference (as opposed to dogs who crap in the middle of the grass).
I've kept cats for 12 years now and I'm also a keen gardener; I've yet to lose a plant to the cats.

Guest, if you don't like cats then you won't be coming a visiting me anyway:-)

Scott