If you breathe in the nasty stuff from their skat you can get very sick and you can die. Google it... raccoon roundworms or whatever.
Now... you don't have to be a raccoon shit disturber to have this problem. All ya gotta do is high five a racoon. They may wash their food but they still walk through their own shit near their dens.
My forefathers terminated racoons near their farms on sight with extreme predjudice and for very good reasonS.