No, it's not a good idea to kill all the cats if rats are a problem in town. This is because cats are natural predators of rats and help to control their population. Without cats, the rat population could grow uncontrollably, causing more problems such as the spread of diseases and damage to property. Moreover, killing cats is inhumane and unnecessary; there are other ways to deal with rat infestations such as using traps, deterrence methods or consulting pest control professionals.
