When cockroaches walk over your counter, what do they leave with their footsteps?

Question

Cockroaches walking, eating, what is the exact potential pathogen/disease/poison/grossness that they leave all over your stuff? They are gross to be sure, but what dangerous is there about them?

Answer 1

Whatever you left out for them to track around.

Answer 2

they leave their p**p and germs from everywhere else they've been lately - dumpsters, trash cans, litter boxes, etc.

Answer 3

they can leave anything, since they crawl about anywhere...