Rats & Mice

I'm so tired of fighting these suckers.  You get rid of 3 or 4 and more take their place.  I've caught over 15 rats/mice, in the last 3 months, in traps and I am still fighting to get rid of them.......this is just too much effort to keep up with.  Yet, if I don't they will eventually, become family around here.  Actually, I think they already, think that they are at home.  Damn, it!