Rat Catchers, Madamba, Mozambique

Another, more recent appearance a rat-catcher in fiction is the children's novel The Twinkie Squad by Gordon Korman. As a result a student prank which leaves the entire school smelling like dead fish, the principal hires several "pressionals" to find and remove the cause the stench, including a sewer gas expert, an x-ray technician, and a man calling himself the "District Columbia Ratcatcher". All three "experts" fail to find anything, with the rat-catcher concluding that there is a dead animal in the walls which can only be found and removed by means demolition.
However, the story has a modern setting, not a Victorian one, and therefore the rat-catcher in the story is more a general pest-control man, not strictly a specialist in rats alone.