Boxed tin of "Rodine" rat poison, by Thomas Harley Ltd., Perth, Scotland, 1948-1950
Rats have long been associated with disease and public health problems and various methods have been devised to trap or poison them.
The active ingredient in this rat poison is highly toxic yellow phosphorous, which is commonly used in pest control – the poison swiftly and fatally dehydrates the rats. Phosphorous can be lethal to humans if swallowed. The box has recommendations from satisfied customers to inspire confidence in the product.