Shelter releases 1,000 feral cats on to Chicago streets to combat rat crisis

Program called Cats at Work places two or three felines outside residences and businesses to deal with rodent problem

An animal shelter in Chicago has released 1,000 feral cats throughout the city to combat a rat crisis.

Through a program called Cats at Work, the Tree House Humane Society, a local animal shelter, releases feral felines on to city streets. The initiative places two to three cats, all spayed, neutered and vaccinated, outside of residences and businesses to sustainably deal with Chicago's rodent problem.