rats

I think rats and mice have become very clever today, I think they have become immuned to poisons and are way too clever for traps, I think the only hope we have from these things these dyas is cats, and maybe even the stray cats as they are hungry, in my area the cat haters have done their best to get rid of most cats and we are over run with mice and rats, my cat is always catching them, I hate mice and rats so much i would prefer to have one hundred cat to one mouse or rat...I hope you get an answer for the ones in the wall...I guess they have to come out at some time....