In the battle of cats vs. rats, the rats are winning

Source: Science Daily

New research finds that contrary to popular opinion, cats are not good predators of rats. The study — the first to document interactions between feral cats and a wild rat colony — shows that rats actively avoid cats, and only recorded two rat kills in 79 days. The findings add to growing evidence that any benefit of using cats to control city rats is outweighed by the threat they pose to birds and other urban wildlife.

https://www.sciencedaily.com/releases/2018/09/180927083342.htm