My Aunt and me do not like rats and We just hate rats and mice too.
I don't know how many rats are present in my home and they are so irritated and destroying things which I don't like.
Recently I have a cat so rats became afraid of cato and leave our home.
Yes. If they are inside the house and if there are many of them the problems are serious. But in my case, the rodents are outside, and with seven cats around, they can't reproduce and survive in big numbers, so I'm not having the bad experience you just described.