By Klinger May 13, 2021 GREAT IDEA ALERT!! Rats run wild everywhere and Chicago has been dealing with a rat infestation forever! Orkin just named our beloved city of Chicago the rattiest city for the 6th year in a row!! Cats are superstars at hunting rats. The Tree House Humane Society in Chicago releases feral cats on the regular to keep the rat situation in check. It is simply responsible to capture feral cats in a safe manner, have them spayed or neutered (clip the ear so you can tell they've been fixed) and then release them back outside. My wife and I were a part of a program in DC where feral cats who were fixed would be released outside with the purpose of keeping the rat population at bay. The Cats At Work program in Chicago works the same way and provides a safe alternative to rat bait by having a cat that keeps rats from coming around.