Rat-Catcher

In Georgian and Victorian Britain, when rats infested homes, granaries, sewers, and ships in numbers no one could ignore, the answer was a freelance specialist with a sack, a few terriers, and a pocketful of ferrets. The rat-catcher was hired by households, farms, warehouses, and parishes to clear out vermin, and he did it with a hands-on repertoire that mixed cunning, showmanship, and real physical courage. He set traps, sent ferrets into burrows, loosed dogs, and, notoriously, caught rats alive with his bare hands, building a trade out of an animal everyone else loathed.

The emblematic figure is Jack Black, who styled himself “rat and mole destroyer to Her Majesty,” cut a flamboyant figure in a homemade uniform with a sash of cast-iron rats, and was interviewed by the journalist Henry Mayhew for his great survey of the metropolitan poor, “London Labour and the London Poor.” Black caught rats for government departments and the royal parks, sold live rats to the pits where dogs were timed killing them for sport and gambling, and, in a curious sideline, bred unusually coloured rats and sold them as pets to ladies, helping to start the fancy-rat hobby almost by accident.

The work was dangerous and dirty. Rat-catchers were bitten constantly, risked serious infection including what is now called Weil’s disease, and handled home-brewed poisons, often arsenic-based, that could sicken or kill the catcher as readily as the rat. Each practitioner guarded his own secret lures and mixtures, and the trade had more in common with a folk craft passed between individuals than with any organized profession.

The rat-catcher was not so much exterminated as absorbed. Germ theory and the great Victorian public-health reforms reframed rats as a disease vector and made their control a matter of municipal sanitation, sewers, and law rather than freelance heroics. Regulated commercial rodenticides, and from 1950 the safer anticoagulant warfarin, replaced secret arsenic recipes; licensing and the rise of a professional pest-control industry did the rest. The colourful freelancer with his ferrets and terriers gave way to the uniformed technician with a clipboard, and the trade survives, transformed, as modern pest control.